The parties must sign this Separation Agreement in the presence of a Notary Public if they are filing a Joint Petition for Divorce (1A). Form to fill out when one spouse wants a divorce.The Parties were married on. , in ______, and last lived together at. in. A Massachusetts separation agreement is a contract between spouses who no longer wish to live together as a married couple. Sample Template Language for Massachusetts Separation Agreements. Filling out this form requires careful attention to detail. You and your spouse may sign an agreement that says how you want to handle things after you get divorced. The agreement is called a Separation Agreement. A property settlement agreement becomes a legally binding part of the final judgment when your marriage is officially dissolved.