I've had the same issue with adderall messing with my sense of sexuality. I think of myself as a strait male - but moreso in the earlier days with the extreme horniness of adderall I'd watch all sorts of porn and have all sorts of fantasies.

I eventually came to think of it that way (though my stim sex preferences have slowly moved to baseline since I started taking more regularly and building tolerance and taking a steady dose!): adderall hijacks your dopamine reward system, it drives you to seek out pleasurable states and activities and is known for hypersexuality, i'm sure some have had these feelings if they take it before a night of drinking (which i have, but now never ever drink really) - if you don't hook up with a girl / guy, when you're back at the end of the night alone you pretty much feel like you'd be fine fucking / cumming with anything that moves, sex is secondary.

I'm not articulating this as well as I thought i could. I've done some pretty questionable sexual stuff on adderall and very little not on it. I still think I'm a straight male who will marry a woman, maybe I'm in denial, but it just comes down to the fluidity of sexuality, and the profound impact of drugs on th brain, which is sort of like changing the brains operating system for a bit on drugs