cathinones make me less horny as a woman

every time i use either 3/4mmc i used to get really horny, i would masturbate several times and come really quick. i usually don’t watch porn on my own and would mostly watch videos of me and my bf. however sometimes would explore porn sites but more in a curious and curiosity for the deviant side of it.

however me and my bf take cathinones among other stuff frequently and in the beginning i would go for hours and hours but now it seems to make me less horny and in the mood for it. my bf however gets extra horny on it.

so basically my question: there’s other influential aspects to sex for me personally with or without drugs, but is there a theory behind women getting less horny and men getting more horny on cathinones?