*puts on blue wig* No but you see bis are just indecisive and you can't know whether you're ace before you've tried and once you've tried you've had sex and can't be ace so they don't exist anyway. Also it's only pan if you're from Greece if you're from Italy and call yourself pan instead of bi that's colonialism.
Hell I wouldn’t even be surprised if he’s uncomfortable with lesbians. I’ve found many who are like that define their acceptance of other queer people on how much they feel they’re similar.