I think it's male mentality. For females, sex is more of a personal thing as you are letting another human being inside of you. Literally.
Whereas with guys, they are just putting it inside, so it feels less personal. Plus guys are generally stupid and don't feel privileged that someone is willing to let you inside f them.
I think that's also why so many guys have issues with gay guys, because they have the fear of something being put inside of them.
So, ba11s to them, sleep with as many guys as you want, some guys, including me, tend to find it a bit of a turn on.
This is one of those double standards that have bugged me to no end. It has always been like this however, men back then were expected to cheat, while the females were expecteed to be virgins and be faithful. I think it goes back to how females were not considered humans, but possessions of men way back when.
It's been that way since the dawn of time, and has bugged the crpp out of me. But I suppose it's better to be called a s1 ut than live in some place where the guy still gets the high five, and the woman gets stoned to death.
Do you mean girls that sleep with several men are called s1uts, but when men sleep with several women they get a high five?... I'm not sure, but it's definitely a double standard..
Who says it is acceptable? Are you talking about cheating? That is not acceptable no matter the gender.
It's just the way of society.. :/