Why do some men get so angry at women who sleep around?

It's because sex isn't on the male. By that I mean is that women hold 100% of the power when it comes to sex. A women has to agree to have sex with a man or it is rape. The man has to ask.. the women has to accept the offer. Therefore all the power lies completely with the female if its going to happen or not. That makes the woman 100% responsible for all sexual activity unless its rape.