To be against same-sex marriage does not make one homophobic. When a car and home of a Seattle gay couple was vandalized with spray paint with anti-gay messaging (God hates f---) and such giving the impression Christians did it, our church in the suburbs collected well over well over the $2000 cost of the damage and sent it to the couple, with a letter of apology on behalf of Christians, and a beautiful message about how God loves them and all of us.
I work with gay people, and I have no more reason to dislike them for what they do outside of work than I do with a straight person I may sit next to in church that is struggling with an internet porn addiction or drinking problem. We all fall short.