What's the difference between a straight man and a gay man besides one being oppressed, and the other not? Being attracted to a certain type of person isn't a personality trait.
(also, the nb erasure throughout this entire conversation is really depressing)
The first and most obvious difference is who they're attracted to. As to how that difference might influence interaction or romance, that comes down to the character's personality. Like it or not, a gay man may be more willing to forego traditional gender roles than a bisexual man. I'm not opposed to this because I don't see it as necessarily damaging or unfair, but from my understanding you would not approve. That's fine, but I think it's a possibility, regardless of whether or not homosexuals are stigmatized.
(I don't know what the parentheses stuff means)