Montana Title 40. Family Law § 40-4-107. Irretrievable breakdown

(1) If both of the parties by petition or otherwise have stated under oath or affirmation that the marriage is irretrievably broken or one of the parties has so stated and the other has not denied it, the court, after hearing, shall make a finding whether the marriage is irretrievably broken.

(2) If one of the parties has denied under oath or affirmation that the marriage is irretrievably broken, the court shall consider all relevant factors, including the circumstances that gave rise to filing the petition and the prospect of reconciliation, and shall:

(3) A finding of irretrievable breakdown is a determination that there is no reasonable prospect of reconciliation.