In Washington State, do you have to file in civil court (get a marriage license) in order to be married? I would like to have a religious ceremony with my boyfriend, but have heard if I file for a license in civil court, I give up a lot of my rights as a single woman. I would assume I can change my last name legally, add my spouse to my will, and add him to my bank accounts anyways, without a marriage license. So I don't understand the benefit to having a marriage license. Any thoughts would be helpful.