In re the Parentage of M.F.

¶1 The primary issue in this case is whether John Corbin has a cause of action as a de facto parent for residential time with M.F., his former stepdaughter.1 We hold that he does not. We must also decide whether the existing parenting plan governing residential time with M.F. may be modified without the statutorily required showing of adequate cause.2 We hold that a showing of *562adequate cause is required, and none has been shown here. We reverse and dismiss.

¶2 The parties do not substantially dispute the material facts. Patricia Reimen and Edwin Frazier are the biological parents of M.F.,…