Same-sex marriage also known as gay marriage is the marriage of two people of the same sex or gender , entered into in a civil or religious ceremony. There are records of same-sex marriage dating back to the first century though there is no legal provision in Roman Law, and it was banned in the Roman Empire in the fourth. In the modern era, same-sex marriage started being legalized at the beginning of the 21st century. Today, it is available in 28 countries. Same-sex marriage is also due to become legal in Costa Rica. A ministerial decision decreed that Armenia shall as well, though as of February there had been no actual cases.
LGBT history dates back to the first recorded instances of same-sex love and sexuality of ancient civilizations , involving the history of lesbian , gay , bisexual and transgender LGBT peoples and cultures around the world. What survives after many centuries of persecution—resulting in shame, suppression, and secrecy—has only in more recent decades been pursued and interwoven into more mainstream historical narratives. This observance involves highlighting the history of the people, LGBT rights and related civil rights movements. Among historical figures, some were recorded as having relations with others of their own sex—exclusively or together with opposite-sex relations—while others were recorded as only having relations with the opposite sex. However, there are instances of same-sex love and sexuality within almost all ancient civilizations. Additionally, people who are third gender or what we would now think of as intersex have been recorded in almost all cultures across human history. Anthropologists Stephen Murray and Will Roscoe reported that women in Lesotho engaged in socially sanctioned "long term, erotic relationships," named motsoalle.