This affidavit documents the cohabitation of two individuals for over ten years without being legally married. The purpose of this affidavit is to attest to the truth of their unmarried cohabitation for legal purposes.An Affidavit of Cohabitation is used if a couple wants to prove that they are living together as spouses for a certain period. This legal document serves as proof of the couple's cohabitation, primarily in the context of legalizing their union or asserting certain legal rights. Edit, sign, and share affidavit of cohabitation online. No need to install software, just go to DocHub, and sign up instantly and for free. The downloadable PDF file includes a list of the basic points that the writer should cover in the letter and an example I751 affidavit. Once you have filled in the other sections, both parties should sign the agreement so it becomes a legally binding contract. (FILL IN THE DATE) we deposed to an affidavit in terms of part 1 of this form. 4. During this period we have professed to be husband and wife and we have held ourselves out to the community as being married.