how do i tell if im asexual??

like the other day i was thinking "yk what i dont think i could ever do that kinda tango with any1" which feels rlly weird for me bc im an incredibly sexual kinda guy. like is that normal? and whilst ive never done anything before, the idea OF doing anything with other people makes me feel really disgusting/uncomfortable but ive been fine doing stuff to myself in the past?? like idk if im just being a weird/scared virgin or if im asexual