Maine State Law Maine recognizes same-sex relationships under state law as follows: Same-Sex Marriage Same-sex marriage is legal in Maine. A marriage of a same-sex couple that is validly licensed and certified in another jurisdiction is recognized for all purposes under the laws of Maine. Click here for more information. Domestic Partnerships Registered domestic partners (regardless of the gender of either party) are accorded a legal status similar to that of a married person with respect to matters of probate, guardianships, conservatorships, inheritance, protection from abuse, and related matters. Click here for more information.