Download a cohabitation agreement template to describe how you and a nonmarried partner will divide obligations while you live together. Share the same regular and permanent residence and.â–« Have a close personal relationship and. General information and self-help packets about family law issues for unmarried couples in Washington state. To change the date or place of marriage or dissolution, the officiant (marriage) or clerk of court (dissolution) must complete and submit the affidavit. We are not married to, or in a domestic partnership with, anyone else. How to fill out the Nonmarital Cohabitation Agreement for Couples? She will fill out her part of the application when she is in front of the registrar. This website can become your go-to platform for completing as well as signing legal forms. The father of my child has avoided being added to the birth certificate for our 1 year old.