Seemingly Chris inviting ex Karrueche Tran on tour with him was the proverbial straw. Not the constant threat of violence, or the on-going belligerence.

E! News reports: "Chris's ex-girlfriend Karrueche Tran reportedly joined the R&B singer on tour in Paris earlier this week. Rihanna, apparently not amused, tweeted (then deleted) Tuesday, 'Goodbye muthaf*ker. You give, you get, then you give it the f–k back,” She added, then took down. 'Examine what you tolerate'."

Sage words from Rihanna for once. Tolerating an abuser is never a good thing. Then again she probably has Ronald to thank for that.