Men can go fuck with whoever they want and they are considered 'normal' yet when a woman does it, she's a whore or a slut.

Well, that's because people started assuming "normal" is "moral". It's a way to avoid having to deal with tricky questions of whether one's ordinary impulses are actually what they OUGHT to be doing. Since when do "should" and "want" intersect as a matter of course? (Ah, but in this shallow society, who ever has thoughts like that? They're so...inconvenient.)

Maybe that's not where you were going, but I'd like to register agreement that, no, the double-standard is not okay.