Filling out the Affidavit of Co-Habitant is straightforward. Use the checklist to find out which documents you must provide.RESIDENT SPOUSE: Evidence of the duration of your relationship of at least 5 years. To add a parent to orders, the employee must complete an OF-126, the Foreign Service Residence and Dependency Report. If you and your partner have spent time living separately, provide details. E3. With this form, you will be asked to establish your relationship with your alien relatives or spouse who wish to join you in the country. – In the question online, what date should I place as a de facto? Date when we started dating, living together or registered the relationship? Find out everything you need to know about the IMM 5409 Statutory Declaration of Commonlaw Union, from what it is to how to complete it. My wife has my surname in the marriage certificate but all other documents including the passport has her maiden surname.