I see in some LGB communities that the ONLY reason they won't date bisexuals is that the bisexual person will leave them for the opposite sex or that they're untrustworthy/cheaters or that bis have "residue"/"cooties" from the previous partner of opposite sex.

Even though, like you said, it's not any different than a straight or gay person leaving their partner...

Ultimately, I don't care if they date or don't date bisexuals. Just wish they wouldn't stereotype and keep those opinions to their self or amongst themselves and not say it within earshot of bi people and expect us to agree with these dumb stereotypes.

They could just leave it at "I don't date bisexuals because I can't relate to their life experiences" and that's that...

Then when straight people they're like "wait, you're dating the opposite sex now? So...you're straight and not gay anymore?"

lol