Why is it that when guys have hundreds of hook ups its not frowned upon?

well its primarily because when a girl is looked down upon for having its usually a guy looking down on her, so when a dude has since its another dude judgeing him its seems like a score, and it also seems that girls dont look down on guys because they find experience hot. personally i think its all bullshit and people should look in the mirror before they judge others and, a girl can have as many partners as she wants as long as when shes with me she is faithful to me. but thats just me