At issue is whether a person with a longstanding relationship to a child, but who is not a biological or legal parent of the child and not related by marriage to the child’s biological parent, may pursue parental rights with the child under a theory of equitable parenthood or equitable estoppel. We conclude that plaintiff fails to state a claim to pursue parental rights with respect to the two children at issue under either theory, and, accordingly affirm the judgment of the Court of Appeals, which affirmed the trial court’s grant of defendant’s motion for summary disposition.
FACTS AND PROCEEDINGS
Plaintiff Scott Van and defendant Mary Zahorik cohabited from 1986 to 1991 but were never married. Mr. Van claims that he and Ms. Zahorik continued their relationship for several years after they stopped living together. Ms. Zahorik had two children in the course of this relationship; one in 1989 and the other in 1993. Mr. Van alleges that Ms. Zahorik informed him that he was the father of the children. He believes that he was named as the father on the birth certificates of both children. He claims that he cared for and financially supported the children both during and after his relationship with Ms. Zahorik.
As of March 21, 1996, when Mr. Van started a relationship with another woman, Ms. Zahorik refused to allow Mr. Van to see the children. However, on March 25, 1996, Ms. Zahorik filed a paternity complaint against Mr. Van in which she alleged that he *324was the father of both children. Ms. Zahorik apparently dismissed this action. On July 26, 1996, Mr. Van filed a petition to establish paternity in which he alleged that he “believed and continues to believe he is the father” of the two children. On August 22, 1996, Ms. Zahorik filed a motion for summary disposition under MCR 2.116(C)(8), in which she argued that Mr. Van was not the biological father of either child1 and could not be an “equitable parent” to them because Mr. Van and Ms. Zahorik were never married. In response, Mr. Van conceded that blood testing showed that he was not the biological father but argued that he was an “equitable parent” and that Ms. Zahorik was equitably estopped from denying that he is the father. The trial court granted Ms. Zahorik’s motion for summary disposition. The trial court indicated that its ruling turned on two factors: 1) that Mr. Van apparently was not the biological father of the children, and 2) that Mr. Van and Ms. Zahorik were never married. The Court noted that Michigan’s public policy favored marriage and concluded that the doctrines of equitable estoppel, equitable parenthood, and equitable adoption require marriage.
The Court of Appeals affirmed in a split decision. 227 Mich App 90; 575 NW2d 566 (1997). The majority noted that Michigan’s public policy favors marriage and that the Legislature has enacted “a comprehensive statutory scheme dealing with issues such as the one in the case at bar.” Id. at 96, 99. It held at 99:
*325In sum, the equitable parent doctrine has previously been applied only in situations where a child was bom or conceived during a marriage, to convey equitable parenting status on a husband who was not the biological father of the child. Because of the magnitude of the policy considerations involved in extending application of the doctrine outside such circumstances and the presence of a complex statutory scheme dealing with such issues, we defer to the Legislature and decline to accord plaintiff equitable parent status.
It also rejected Mr. Van’s equitable estoppel claim. It acknowledged that “[e]quitable estoppel can be used to estop a ‘father’ who is not biologically related to a child from denying responsibilities associated with paternity.” Id. at 100. However, it concluded at 101-102:
[I]n the case at bar we are asked to apply equitable estoppel against a natural parent to allow a third party parental visitation rights. There is no authority requiring us to apply equitable estoppel in such a manner, and out of judicial restraint, we refuse to do so. While plaintiff’s argument that, if he theoretically could be estopped from denying a support obligation, he should have the right to visitation is sound, and there may be some implicit relationship between the duty to support and the right to visitation, Atkinson [v Atkinson, 160 Mich App 601, 609; 408 NW2d 516 (1987)], we feel that in light of the policy considerations at issue, it is necessary to stop the expanding application of equitable estoppel and the corresponding decay of the equitable parent doctrine. Such a holding may seem arbitrary, but we feel strongly that such action is necessary to prevent further, improper, judicial intrusion into this legislative policy arena. As a result, we decline to apply equitable estoppel in the case at bar.
The majority further noted that equitable estoppel is not itself a cause of action and provides no remedy. Id. at 102. It concluded that Mr. Van improperly *326attempted to assert equitable estoppel as a cause of action. Id.
In a separate opinion, Judge Hood concurred in the majority’s rejection of Mr. Van’s equitable parenthood claim, but dissented from its rejection of his equitable estoppel claim. He stated that under Guise v Robinson, 219 Mich App 139; 555 NW2d 887 (1996), Mr. Van would be estopped from denying liability for support payments. 227 Mich App 106. He concluded:
I respectfully submit that it would be inequitable to hold that plaintiff could be liable for support payments but could not enjoy the benefits of visitation because he is not related to the children by blood. Defendant should be bound by the same rules of equitable estoppel as plaintiff.
I would hold that defendant should be equitably estopped from contesting plaintiff’s rights to visit the children. [Id.]
This Court granted leave to appeal. 458 Mich 865 (1998).
STANDARD OF REVIEW
The applicability of the doctrines of equitable parenthood or equitable estoppel arose in the context of Ms. Zahorik’s motion for summary disposition pursuant to MCR 2.116(C)(8). This Court reviews rulings on summary disposition motions de novo. Spiek v Dep’t of Transportation, 456 Mich 331, 337; 572 NW2d 201 (1998).
MCR 2.116(C)(8) tests the legal sufficiency of the claim on the pleadings alone to determine whether the plaintiff has stated a claim on which relief may be granted. The motion must be granted if no factual development could justify the plaintiff’s claim for relief.
*327DISCUSSION
We begin with the premise that child custody disputes raise important public policy issues. We agree with the Court of Appeals majority, which stated:
As a general rule, making social policy is a job for the Legislature, not the courts. See In re Kurzyniec Estate, 207 Mich App 531, 543; 526 NW2d 191 (1994). This is especially true when the determination or resolution requires placing a premium on one societal interest at the expense of another: “The responsibility for drawing lines in a society as complex as ours — of identifying priorities, weighing the relevant considerations and choosing between competing alternatives — is the Legislature’s, not the judiciary’s.” O’Donnell v State Farm Mut Automobile Ins Co, 404 Mich 524, 542; 273 NW2d 829 (1979). [227 Mich App 95.]
Specifically, this Court has indicated that the public policy issues related to child custody disputes are to be resolved by the Legislature, not the judiciary:
We are mindful of the extensive writings with regard to parental rights, the “best interests of the child” standard, “psychological parents,” and the arguments, pro and con, for creating third-party rights to custody. We are also aware of the constitutional issues raised by the creation of third-party rights to custody. However, we are not in a position to make such policy judgments, especially in light of the fact that the Legislature appears to have chosen a different course in its consideration of the competing interests involved. Therefore, we leave to the Legislature the task of creating substantive rights, subject to any constitutional restraints, if it finds that public policy so requires. [Bowie v Arder, 441 Mich 23, 46-47; 490 NW2d 568 (1992).]
Further, we agree with the Court of Appeals observation that the Legislature has provided a comprehensive statutory scheme to deal with such issues in the Child Custody Act, MCL 722.21 et seq.; MSA 25.312(1) et seq. See 227 Mich App 99. MCL 722.24(1); MSA *32825.312(4)(1) states that in all actions involving dispute of a minor child’s custody, courts are to declare children’s inherent rights and establish the rights and duties regarding custody, support and parenting time “in accordance with this act.” Therefore, the Child Custody Act is the exclusive means for pursuing such rights. In addition to addressing child custody disputes between parents and between a parent and state agency, the Child Custody Act specifically addresses the rights of certain other parties, e.g., legal guardians and grandparents. MCL 722.26b; MSA 25.312(6b), MCL 722.27b; MSA 25.312(7b). However, none of these specific provisions cover Mr. Van’s circumstance.
For purposes of the Child Custody Act, Mr. Van is a third person. MCL 722.22(f); MSA 25.312(2)(f) defines “[t]hird person” as “any individual other than a parent.” By his own admission, Mr. Van is not a biological parent of the children at issue. Apparently because he believed himself to be the biological father until shortly before he filed the present action, he has not pursued other means to become a legal parent, e.g., adoption. Because he is neither a biological nor legal parent, Mr. Van is a third person under the Child Custody Act. MCL 722.26c; MSA 25.312(6c) articulates circumstances under which a third person may bring an action for custody of a child.2 The pres*329ent matter clearly does not fit within these parameters. Accordingly, under the terms of the Child Custody Act, Mr. Van, a third person, is ineligible to bring an action to pursue parental rights here.
Further, because Mr. Van is neither a biological parent nor a legal parent of the children at issue, his claim is essentially based on the fact that the children lived with him. This Court has repeatedly held that a third party does not gain standing to proceed under the Child Custody Act by virtue of the child having resided with the third party. Bowie, supra at 27; In re Clausen, 442 Mich 648, 682; 502 NW2d 649 (1993).
Perhaps in recognition of his inability to proceed under the Child Custody Act as a third person, Mr. Van alleges that he is a parent under an equitable parent theory or by operation of equitable estoppel. If he were declared a parent under either theory, he would presumably be able to proceed under the Child Custody Act as a parent, rather than as a third person. The primary obstacle to his approach is that the Child Custody Act does not recognize these theories. It simply includes no provisions that would allow a person to pursue a custody action as a “parent” under a theory of equitable parenthood or equitable estoppel.
*330In the context of a subject matter fraught with public policy implications and the Legislature’s occupation of the field of child custody with the promulgation of the Child Custody Act, the judiciary is not the proper entity to create new rights or extend theories to reach new situations. The creation and extension of rights relating to child custody matters is clearly the province of the Legislature, not the judiciary.
It is within this context that we address this matter. The specific issues before us are: 1) whether to extend equitable parenthood outside the context of marriage, and 2) whether to extend equitable estoppel outside the context of marriage to estop Ms. Zahorik from denying that Mr. Van is an equitable parent.
A. EQUITABLE PARENTHOOD
The equitable parent doctrine was announced in Atkinson v Atkinson, supra at 608-609:
Therefore, we adopt the doctrine of equitable parent and find that a husband who is not the biological father of a child bom or conceived during the marriage may be considered the natural father of that child where (1) the husband and the child mutually acknowledge a relationship as father and child, or the mother of the child has cooperated in the development of such a relationship over a period of time prior to the filing of the complaint for divorce, (2) the husband desires to have the rights afforded to a parent, and (3) the husband is willing to take on the responsibility of paying child support.
By its terms, this doctrine applies, upon divorce, with respect to a child bom or conceived during the marriage. Here, Mr. Van and Ms. Zahorik were never married. The present custody dispute is not in the context of a divorce, and the children at issue were not bom or conceived during marriage. Accordingly, *331the doctrine of equitable parenthood would not apply to the present case.
Mr. Van asks this Court to extend the doctrine outside the context of marriage. As indicated above, the extension of substantive rights regarding child custody implicates significant public policy issues and is within the province of the Legislature, not the judiciary. Accordingly, the primary reason we will not extend this theory here is that the Child Custody Act, which occupies the field of child custody, does not recognize such a theory.3
*332Further, taking a doctrine rooted in marriage and extending it to persons who were never married would have repercussions on the institution of marriage. Michigan’s public policy favors marriage. McCready v Hoffius, 459 Mich 131, 140; 586 NW2d 723 (1998), vacated in part on other grounds 459 Mich 1235 (1999). 4 In Carnes v Sheldon, 109 Mich App 204, 216; 311 NW2d 747 (1981), the Court of Appeals quoted the Illinois Supreme Court opinion in Hewitt v Hewitt, 77 Ill 2d 49, 58; 394 NE2d 1204 (1979), which thoughtfully addressed the propriety of the judiciary weighing the equities in claims between cohabitants:
“There are major public policy questions involved in determining whether, under what circumstances, and to what extent it is desirable to accord some type of legal status to claims arising from such relationships. Of substantially greater importance than the rights of the immediate parties is the impact of such recognition upon our society and the institution of marriage. Will the fact that legal rights closely resembling those arising from conventional marriages can be acquired by those who deliberately choose to enter into what have heretofore been commonly referred to as ‘illicit’ or ‘meretricious’ relationships encourage formation of such relationships and weaken marriage as the foundation of our family-based society? In the event of death shall the survivor have the status of a surviving spouse for purposes of inheritance, wrongful death actions, workmen’s compensation, etc.? And still more importantly: what of the children bom of such relationships? What are their support and inheritance rights and by what standards are custody *333questions resolved? What of the sociological and psychological effects upon them of that type of environment? Does not the recognition of legally enforceable property and custody rights emanating from norunarital cohabitation in practical effect equate with the legalization of common law marriage . . . ?”
Here, the Court of Appeals correctly observed that a relationship that does not constitute a legal marriage does not give rise to property rights between the parties, and, similarly, that a court should not be unmindful of the role of our Legislature concerning access to children on the periphery of such relationships. It opined:
[I]f this Court [in Carnes, supra] was struck by the magnitude of the public policy questions arising from property disputes in cohabitation situations, there can be no doubt that questions pertaining to the best interests of children in cohabitation situations should be left to the legislative process, especially if one of the cohabitants seeking custody or visitation is not biologically related to the child. [227 Mich App 97.]
We hold that because the requested extension of the equitable parent doctrine would affect the state’s public policy in favor of marriage, the Legislature is clearly the appropriate entity to consider this issue.
Finally, we note that the strongest rationales under-girding the equitable parenthood doctrine within marriage relate to reinforcement of the importance of marriage and legitimacy. These important policies can provide no justification for, and in fact are antithetical to, the extension of the doctrine outside the context of marriage. The Atkinson Court relied on the doctrine of “equitable adoption,” which itself is premised on the marriage relationship as articulated in *334the intestate succession statute, MCL 700.111; MSA 27.5111.5 Section 111 states in pertinent part:
(2) If a child is bom or conceived during a marriage, both spouses are presumed to be the natural parents of the child for all purposes of intestate succession. . . .
(3) Only the person presumed to be the natural parent of a child under subsection (2) may disprove any presumption that may be relevant to the relationship, and this exclusive right to do so terminates upon the death of the presumed parent.
The Atkinson Court opined, “It is only logical that a person recognized as a natural parent in death should have the same recognition in life.” Id. at 611. In addition, we note that the equitable parenthood doctrine, as set forward in Atkinson, is consistent with the presumption that children bom during a marriage are legitimate. While this Court, in Serafin v Serafin, 401 Mich 629; 258 NW2d 461 (1977), discontinued adherence to “Lord Mansfield’s Rule” (which barred a husband or wife from testifying about nonaccess to each other), it reiterated that a child is “guarded by the still viable and strong, though rebuttable, presumption of legitimacy.” Id. at 636. This presumption provides an additional basis for the equitable parent doctrine. The rationales provide a sound basis for equitable parenthood in the context of marriage because they are bottomed in statute and consistent with this state’s public policy in favor of marriage and legiti*335macy.6 These justifications are lacking in the context of a cohabitation relationship, however, and this lack of justification with respect to children bom out of wedlock fatally undermines the case for extending equitable parenthood outside the context of marriage.
Accordingly, we conclude that Mr. Van’s equitable parenthood claim fails.
B. EQUITABLE ESTOPPEL
Equitable estoppel arises where a party, by representations, admissions, or silence intentionally or negligently induces another party to believe facts, the other party justifiably relies and acts on that belief, and the other party will be prejudiced if the first party is allowed to deny the existence of those facts. [Soltis v First of America Bank—Muskegon, 203 Mich App 435, 444; 513 NW2d 148 (1994).]
The Court of Appeals has repeatedly applied this doctrine to estop a husband from denying paternity of a child bom during marriage, but of whom he is not the biological father.7 See, e.g., Johnson v Johnson, 93 Mich App 415; 286 NW2d 886 (1979), Nygard v Nygard, 156 Mich App 94; 401 NW2d 323 (1986), and. *336Johns v Johns, 178 Mich App 101; 443 NW2d 446 (1989).
The question before us is whether to extend the doctrine of equitable estoppel outside the context of marriage. As discussed above, the primary reason we will not extend this doctrine here is that the Child Custody Act, which comprehensively governs child custody matters, does not recognize it.
However, the Court of Appeals extended equitable estoppel outside the context of marriage in Guise, supra, 219 Mich App 146-147, in which it held:
The present matter may be distinguished from the cited cases on the basis that here the parties were never married to each other. However, this is a distinction without a difference with respect to the elements of equitable estoppel. The cited cases emphasized the length of time during which the putative father held himself out as a father rather than the existence of a marriage relationship in finding estoppel.
This conclusion by the Guise Court failed to acknowledge that the presumption of legitimacy is one of the means by which a husband holds “himself out as a father” of a child bom during the marriage. Application of equitable estoppel in the context of marriage is based in part upon the presumption of legitimacy. This fact militates against extension of equitable estoppel outside the context of marriage and demonstrates that such an extension implicates the state’s public policy in favor of marriage. The judiciary is not the appropriate entity to extend a doctrine rooted in marriage to cover situations where there is no marriage. Thus, Guise was wrongly decided and is overruled.
Accordingly, we conclude that Mr. Van’s equitable estoppel claim fails as a matter of law.
*337conclusion
For all these reasons, we conclude that the Legislature, not the judiciary, is the appropriate entity to weigh the sensitive public policy issues involved in creating or extending parental rights to persons with no biological or marital link to a child. Therefore, we will not extend the doctrines of equitable parenthood or equitable estoppel outside the context of marriage. We accordingly affirm the Court of Appeals decision, which affirmed the trial court’s grant of Ms. Zahorik’s motion for summary disposition.
The present case presents tragic circumstances: the children were suddenly separated from Mr. Van, the only father they had known; Mr. Van lost contact with the children whom he helped raise and support; and Ms. Zahorik only belatedly introduced the biological fathers into the picture. However, the current state of child custody law simply provides no means for Mr. Van, who is not related to the children at issue either biologically or by marriage, to pursue parental rights under either equitable parenthood or equitable estoppel. In short, he has no legal right to continue a relationship with the children. Of course, there is also no legal prohibition against Mr. Van and the children maintaining a relationship. It is well to recall, in the context of an extended custody dispute, what Judge Young aptly observed:
It remains to be seen whether history will also record that they were as faithful to and as invested in their parental duties as they have been devoted to conducting their internecine legal war of attrition. [Fletcher v Fletcher, 229 Mich App 19, 21; 581 NW2d 11 (1998).]
Bearing this in mind, we hope that Ms. Zahorik will proceed with the children’s best interests in mind.
*338The Court of Appeals decision is affirmed.
Weaver, C.J., and Corrigan and Young, JJ., concurred with Taylor, J.Dna test results dated September 1996 and January 1997 indicate that two other men are the biological fathers of the two children at issue. Orders of filiation and support were entered with respect to the biological fathers in February 1997 and August 1997.
Section 6c states in pertinent part:
(1) A third person may bring an action for custody of a child if the court finds either of the following:
(a) Both of the following:
(i) The child was placed for adoption with the third person under the adoption laws of this or another state, and the placement order is still in effect at the time the action is filed.
*329(ii) After the placement, the child has resided with the third person for a minimum of 6 months.
(b) All of the following:
(i) The child’s biological parents have never been married to one another.
(ii) The child’s parent who has custody of the child dies or is missing and the other parent has not been granted legal custody under court order.
(in) The third person is related to the child within the fifth degree by marriage, blood, or adoption.
The dissents correctly observe that the Child Custody Act is equitable in nature and that the courts are entrusted with applying it to the myriad factual circumstances in which child custody matters arise. On the basis of this broad overview, the dissenters would find this to be a factual circumstance where the Child Custody Act provides authority for intervention. This is incorrect, however, because this dispute is not one cognizable under the Child Custody Act, no matter how broadly one chooses to view it. There is, in this case, no active custody dispute between Ms. Zahorik and the biological fathers of the children. Thus, the Child Custody Act is not implicated on the basis of ongoing litigation. Moreover, Mr. Van is unable to create a child custody dispute under the Child Custody Act himself, because the act includes no provision that, even if “liberally construed” as the dissents suggest, would recognize Mr. Van as a parent eligible to dispute custody and pursue parental rights thereunder. There is then no viable route under the Child Custody Act that will give Mr. Van a remedy. This is the end of it unless, or until, the Legislature, the body charged and equipped to decide such complicated public policy issues, chooses to revisit the Child Custody Act so as to amend it to reach Mr. Van’s circumstance.
Further, in his dissent, Justice Beickley inaccurately contends that we find that “Michigan’s public policy favoring the institution of marriage supersedes the Legislature’s express directive that the ‘best interests’ of the child control” and that we elevate marriage as the “sole relevant consideration.” Post at 341-342. Throughout this opinion, we state that the primary barrier to Mr. Van’s claim is that the Child Custody Act, which occupies the field of child custody, does not recognize equitable parenthood or parenthood by estoppel. The fact that Mr. Van and Ms. Zahorik never married has no bearing on this rationale. We specifically note that the present case does not raise the issue of the viability of these doctrines in the context of marriage and that we accordingly leave that issue for another day. Our discussion about Michigan’s public policy favoring marriage is simply *332a secondary rationale in response to the argument that these common-law doctrines should be extended outside the scope of marriage.
Indeed, this public policy is deeply entrenched in our law. As early as 1901, and in an unbroken series of cases, it has been held to be the policy of this state. See, e.g., Wagoner v Wagoner, 128 Mich 635; 87 NW 898 (1901); May v Meade, 236 Mich 109; 210 NW 305 (1926). Moreover, there can be no other understanding of the Legislature’s action in abolishing common-law marriage in 1957. MCL 551.2; MSA 25.2.
The Atkinson Court also offered several other rationales for adopting the doctrine. Among its rationales were that the Child Custody Act is equitable in nature, that equitable parenthood was the “logical extension” of case law that utilized equitable estoppel to require a person who was not a biological father to be considered a parent against his will, and that equitable parenthood would be in the child’s best interest. Id. at 609-611.
While equitable parenthood appears consistent with the recognized presumption of legitimacy and § 111, we question whether it was proper for the judiciary, as opposed to the Legislature, to adopt this doctrine. However, the present case does not involve a married couple. Accordingly, it does not squarely raise the issue whether equitable parenthood was appropriately adopted as a common-law doctrine, and we leave that issue for another day.
As was the case with equitable parenthood, application of this doctrine in the context of a marriage is consistent with the presumption of legitimacy. While we nonetheless question whether it is appropriate for the judiciary, as opposed to the Legislature, to adopt this doctrine, the present case does not present application of equitable estoppel in the context of a child bom during a marriage; accordingly, we will not decide that issue here.