Indeed, "if two individuals do not share a common residence, they are not cohabiting." Cranwell v. Cranwell, 59 Va. App. 155, 162, 717 S.E.2d 797, 800 (2011) (While "proof of a common . . . residence does not itself establish cohabitation," it is nevertheless a "requirement for cohabitation."). "Under [the above] framework," therefore, "a court seeking to determine whether a couple is cohabiting in a situation analogous to marriage must ask, first, whether the couple has 'established and shared a common residence.'"

A threshold requirement for a finding of cohabitation is that the former spouse and another person actually share a common residence. Cranwell v. Cranwell, 59 Va. App. 155, 163, 717 S.E.2d 797, 800 (2011). Unquestionably, that requirement is met here.

"[A] trial court's interpretation of [a marital agreement] is an issue of law that we review de novo." Cranwell v. Cranwell, 59 Va. App. 155, 161 (2011) (alterations in original) (quoting Stacy v. Stacy, 53 Va. App. 38, 43 (2008) (en banc)). A. Portion of Retirement Benefit Plan Payments Due to Wife Per Settlement Agreement