Someone who’s attracted to men, women, non-binary (etc) romantically but talking about sexual activities only would do it with people with the same
sex (genitals) as theirs.
• in
case of ciswomen or non-binary people with vaginas:
feels attracted to all genders but only fucks people with vaginas (not necessarily women)
• in
case of cismen or non-binary people with penises: feels attracted to all genders but only fucks people with penises (not necessarily men)
(I’m not adding trans people because generally they don’t have the same
sex so they would be biromantic-heterosexual. Please don’t feel invalidated using the “heterosexual” because it refers to the
sex, y’all are still real men and women!!!)