Honestly, I wouldn't have a problem with it. But opie is right, it all depends on how you think of gay people in general. If you are extremely homophobic, then yes, you will have a problem with gay men or women in your GLO. If you are accepting of gay people, then you most likely won't care.
There's a few gay guys in one fraternity on my campus. Most people call them cruel names, paint pink triangles on the street by their house, and do nothing but talk about how they're ALL gay. I think they're great for being so accepting of their brothers who are gay. It's starting to come out that other members of the Greek community are gay though, and they're starting to get shit about it. I'm very disappointed in our Greek community in that respect.