Women are not repulsed from other girls as much as guys are repulsed from other guys, I never slept with any of my friend nor soaped each other back in college while most of girls not only dont find it disgusting but they seem to like it.
Second a woman body is receptive, a woman body gets what it is close to while a man body is a giver meaning it leaves something where it gets.
(When u fvck u drop something inside her, not the other way around)
So a man leaves a mark while a woman dont.
There is also a matter of territoriality and rank, the best one gets the territory first so when u arrive after and get the left over you subconsciously consider yourself a lower rank.
For women is the opposite since if they get a man which had many girls it means that she is better of the others if the men in question left them for her, regarding this line consider the availabilyt of sex for men and women which is not the same.