Ironically enough many members of the L and G parts of LGBT treat Bisexuals like homophobes treat them. "Oh you're just pretending to get attention". "You must be a slut!". "You're just gay/straight but don't realize it". "You can't be a member of LGBT, you're dating the opposite gender!". "Bisexuals are straight passing, they're not oppressed lol". And then there's the fact that since Bisexuals are attracted to two genders, people who subscribe to the whole 56 genders thing, or gender is a social construct beliefs, automatically find them bigoted.