Trump was the first presidential candidate to be elected President who supported same sex marriage.
Trump stabbed his supporters in the back on the issue of same sex marriage. All through the campaign, he vowed that he was opposed to it.
2015 - Donald Trump is “for traditional marriage” (CNN interview)
https://www.youtube.com/watch?v=u0hIiF2Hbfw
2016 - Trump hopes for reversal on same-sex-marriage
https://www.politico.com/story/2016/01/donald-trump-iowa-caucuses-marriage-218471
THEN, IMMEDIATELY AFTER BEING ELECTED, HE FLIP FLOPPED:
GOP President-Elect Donald Trump Says Same-Sex Marriage Is ‘Settled’ Law
He literally “came out of the closet” immediatley after being elected, backstabbing everyone who believed he would oppose it.