With the exception of Josh and Bo, and possibly Constantine, I'm not sure there was a straight guy in any of the final groups of the prior seasons. Clay says he is, and we have to take him at his word. But...
Oh c'mon... Scotty "The Body" Savol is straight. I'm pretty sure John Stevens is too. Anthony Fedorov was dating Carrie during last year's competition. I think most of them have been straight, at least in the last two years, the only obvious exception being Anwar.