Gay Marriage Timeline: History of the Same-Sex Marriage Debate

– Gay Marriage Timeline: History of the Same-Sex Marriage Debate – Our updated timeline featuring the history of the same-sex marriage debate includes entries ranging from a gay couple applying for a marriage license on May 18, 1970 to Massachusetts becoming the first state to legalize gay marriage on Nov. 18, 2003 to the Internal Revenue Service (IRS) recognizing same-sex couples for the first time on Aug. 29, 2013.