cohabitation agreement
A cohabitation agreement, sometimes called a domestic contract, is a written contract that non-married partners can make that says how they will deal with their issues while they are living together, after they stop living together, or if one of them dies. They can make this kind of contract before living together, or while living together. For example, a cohabitation agreement can say how much spousal support one partner will pay the other if they separate. It cannot say who will have custody or access to any children.