I think Justin was obviously gay, but Pedro and some of the other gay males on the show may not have fit completly into whatever people's sterotypes are, but at the same time it didn't surprise me when any of them said they were gay.
Karamo totally caught me off guard.
I think it surprised me because the way the show has casted black males in the past, all of them have been str8, so I think the conditioned response when I see a black male on the show is to assume they are str8. Not to mention the previews of the show kinda lead you to believe he's str8.
In any case, I think it's great! I love the diversity in the house.