Probably the reason you didnt see many people in FO3 openly gay (or shouting at the top of their lungs their respective sixuality) is because you were... Pretty young in FO3. iirc, 16?18? Still a teen, or so, since it seems you dont age in game time, and you had just completed your initiation thingie, or maybe a few years after that... And plus that one.. hoker in Megaton seemed to be like "Your too young, but ill still SLEEP in the same bed as you"... That is, iirc. So, being a young'un in all, people didnt want to jump on you like a horny rabbit as much as they do in FNV (it seems to me at least).
The only gays I saw were that one NCR lady, forget her name, Arcade, that male prosttute.. And one or two more. Looking at some posts, it seems only around ten or so people are homosixuals... Not that much.
Oh, and if it counts, you can be a Trisixual in the game... You CAN have six with a robot, after all
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