The purpose of the affidavit is to affirm the facts stated regarding their non-cohabitation for legal purposes. The purpose of the execution of this affidavit is to affirm the facts alleged herein and for whatever legal purpose it may serve.AFFIDAVIT OF NON-COHABITATION. I,. , the petitioner in the above-entitled matter, first being duly sworn, say: I have not cohabited with since . Date. Two individuals seeking to become domestic partners must complete and file a declaration of domestic partnership in person with the City Clerk Department. Allow seventy-two hours for your request to process. Question: I am single parent (mother) with an adopted child which is now 4 and have sole custody. I was in a relationship (non biological father) for 3 years. Complete taxes quickly: How to file a tax return STAT! Ously at his charming official residence in the Phoenix Park.