Diddy's ex-girlfriend Cassie testifies about abuse and ?freak offs?

Cassie, the R&B singer and former girlfriend of Sean ?Diddy? Combs, testified Tuesday that the mercurial music mogul ? powerful, abusive and controlling ? beat her mercilessly and ordered her to have ?disgusting? sex with strangers during drug-fueled, multi-day marathons he called ?freak offs.?