Why Am I Such A Slut?

I hate what I've become. I don't respect myself at all and I basically let guys do whatever they want with me. Its disgusting. I've tried to stop but I really can't. There has to be a reason why I do what I do, and I want to figure it out so I can stop. I'm not close with my dad AT ALL, in fact we really don't get along. They say girls with "daddy issues" tend to be whores, is that why I'm such a sloo? WHY AM I LIKE THIS?