Fill out a Notice of Intention of Marriage Form — You and your future spouse will need to go in person to your city or town clerk to fill out this form. A cohabitation agreement will govern a couple's affairs when the relationship is terminated for whatever reason, including breaking up and death of a partner.This chapter covers who may enter into a marriage, the legal requirements of a marriage, annulments and same sex marriages in Massachusetts. According to Massachusetts law, you must jointly file intentions to marry, and you may do so with the city or town clerk in any community of the state. If you are planning to be married in Northborough or any community in Massachusetts, you must apply for a license (up to 60 days in advance). You should also just have to go to the town call with your info and fill out a form. A domestic partnership is very similar to marriage. It can apply to couples who are not married but live together. All you need to do is go to Boston City Hall, and fill out what's called an "Intent to marry" form. Find your birth certificates.