Same-sex marriage in Belgium 14 December and published on 23 December 1999 made the Act of statutory cohabitation go into effect on 1 January 2000. During 1999, the PS (French-speaking Social Democrats) and Ecolo (French-speaking Greens) also announced they agreed to legalise same-sex marriage. At that point, the only remaining party in Government that opposed same-sex marriage was the French-speaking liberal PRL (later merged into MR), mainly because it was opposed to adoption rights for same-sex couples. PRL agreed not to block same-sex marriage if adoption rights are excluded. As the first same-sex marriage in the Netherlands was performed on 1 April 2001, the
Same-sex marriage in Belgium 2000 to 2014, 698,395 people had reported being in a statutory cohabitation, with that number heavily increasing over the years. 35% of these cohabitations, however, had ended by 2014. In 2014, 3.2% of all statutory cohabitations were between same-sex couples. In the late 1990s, gay rights organisations in Belgium lobbied for the legalization of same-sex marriage. Belgian civil law did not explicitly require that two people be of opposite gender to be able to marry, as this was considered self-evident. Private member's bills in the 1990s by Vlaams Blok senators to add this as an explicit requirement were never considered.