Well, it isn't loveism.
That only relates to gender.
I'm not sure what to call this.
But, even I joke about biloveuality and things, but I don't judge other people for being straight, do I?
i think it'd be more classified as "judgment by loveuality"
as far as i know, no i haven't seen you judge straight people...so, my only question is,
why would he refuse to be your friend because of loveuality?
that isn't a true friend at all.
maybe you should just move on. if gravity cat is on the same side as gold, refusing to be your friend, maybe they shouldn't have been friends with you in the first place.
their decisions on who to hang out with shouldn't be based on whether you like men, women, or both.