No, Donald Trump Has Never Supported Same-Sex Marriage:
http://www.advocate.com/election/2016/1/17/no-donald-trump-has-never-supported-same-sex-marriage
“No, Donald Trump Has Never Supported Same-Sex Marriage:”
But Trump did say he was “evolving” on LGBT rights and marriage equality in 2013.
http://www.advocate.com/election/2016/1/17/no-donald-trump-has-never-supported-same-sex-marriage