A slut isnt a person, its in the eye of the beholder. Like beauty, or an annoying eyelash. We decide who a girl is based on something shes done (or even just rumoured to have done) and then brand her with it as if its a permanent part of her identity. Guys, on the other hand, get to wear their relationships and conquests like medals or badges of honour, which are much easier to take off, and hurt a lot less.