Though Rihanna has remained mum on the bitter feud, she is said to be the reason for the beef between these two hip-hop stars. The story goes that the Barbados beauty romanced Drake following her explosive relationship with Breezy. Brown didn't like that. He also didn't like what went down on June 14 at New York club W.i.P. when a member of Drake's posse allegedly said something about Rihanna directed at Brown. A full-on bar brawl ensued, bottles were tossed, punches were thrown and the rivalry burned on. Brown even posted photos of his injuries on Twitter while Drake was being questioned by police. We're not psychic, but we'd place our bets on this beef having a dramatic third act.