Yes, you will get some hate comments. At least you're prepared and while I know next to nothing about you, I will speculate that it won't bother you (as it shouldn't). The problem as I see it, is that those with strong religious beliefs consider homosexuality to be a sin. Sure, they'll say they can love the sinner and hate the sin, but at least for those here on imgflip, that doesn't seem to ring true.
I doubt I'm the nicest person on this site, but I'm pretty dayum far from being the meanest.
And not that you asked, but I'll just put it out there that politically I'm mostly Libertarian, although I would never actually join any political party. I mention it because as the great Penn Jillette said, "You have to be careful as a Libertarian because you can sound very Republican."