I am a straight male. I love women. I am engaged to one. I looooooooooooove tits. I try to get my hands on (legally) as many sets of beautiful breasts as possible. I have the capacity to find female video game characters "attractive". Not in a 'I am going to have an erotic Bloodrayne wallpaper and think dirty thoughts every time I boot my PC' kind of way, but in a 'Yeah, Trip from Enslaved is probably the sexiest female video game character I have seen, but it doesn't mean she is my dream woman or anything' kind of way. Video game girls with enormous boobs or otherwise exaggerated proportions don't bother or offend me. Video game guys with massive muscles and baseball bat sized penises (lets be honest, we all know it's there but nobody wants to be the one to say it) don't bother me.
That said, the first time I played through DA:O, I played a Male Elf Mage and my first romance was with Zevran. I didn't even think for a second that it was weird or creepy that I was having a gay romance with another male in a game. It just ended up being the most logical path for my character to take given the way my game played out, and I took it.
I think a lot of people take stuff like this way too seriously. IT IS A GAME. If you are a straight male and actually get real, uncomfortable feelings from getting hit on by a gay character in a game, your life is probably going to be very difficult. I can't believe there are still people like this out there in 2011. smh