The thing with bi guys is I'd find it cute if a bi guy gets a boner to girls and would love to get romantically involved with a girl, but doesn't use penor, and wants to be railed like a slut and loved like a girl. But in practice that'd be gay, and to a girl that'd be a gay friend- even romantically that'd be a gay friend since sexually if he doesn't use penor it's by all accounts lesbianism with a guy. And if he does use penor it's a gateway to cheating.
All in all no one wants to date a bi person, the very idea of a bi person is horrible. If you can't be gay then your woes are literally about cheating.