On the blank lines, list the facts the judge needs to know about what happened and when. Put the date you sign the affidavit at the bottom of the form.You must select the location where you're using your affidavit. 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. All information on this form must be completed prior to the issuance of a marriage license in Massachusetts. If an affidavit works, that is just a sworn statement. How Do You Write an Affidavit of Marriage? This guide covers requirements, sample language, costs, and frequently asked questions to ensure your document is compliant and legally sound. In the body of the affidavit, include a statement affirming the affiant's identity.