Plus Rihanna gives CBS the finger, and Shad Moss quits music.
Singer talks friendship with his ex-girlfriend and potential collaborations in the future.
August Alsina is the latest celeb to shut down a show.
Three's a crowd in these turbulent high profile relationships.
Singer blasts network for removing "Run This Town" from Thursday Night Football lineup, over Ray Rice domestic violence video.
Several of our favorite celebs have suffered abuse.