It requires an affidavit of cohabitation if you have a roommate, but if like me, you don't, you have to submit an affidavit that you live alone. A cohabitation agreement is a contract for individuals who live together, outlining their rights and responsibilities.Cohabitation is pretty self explanatory. You cannot live in the same household. When are you separated? This affidavit documents the cohabitation of two individuals for over ten years without being legally married. 6 Few states have adopted laws dealing with cohabitation agreements. The court will need two affidavits to confirm you and your spouse were truly separated while still living together under the same roof. On Monday I consulted with an attorney who told me not to move out of the house or even the marriage bed until I had a place to go. Second District Court of Appeal.