Rihanna, Chris Brown Split? She Tweets "Goodbye Muthaf--ker"

Rihanna break up with her boo Chris Brown AGAIN and Karrueche Tran is to be blamed AGAIN.
Rihanna seems to be having a hard time dealing with Breezy hooking up with his model ex-girlfriend Karrueche Tran.

The “Diamonds” singer vent her frustration via Twitter and Instagram last night after seeing more photos of Chris Brown wearing a hat from Karrueche Tran’s new clohing line The Kill.

“Goodbye muthaf–ker.” Rihanna tweeted.
“You give, you get, then you give it the f–k back. Examine what you tolerate.” Rihanna added on Twitter before removing those tweets.

Over the weekend Rihanna also unleashed an emotional rant on Twitter which suggest she is having difficulties dealing with seeing Chris Brown and Karrueche Tran together.
Do you think these two will ever work out?

   Chris Brown's
pictured above-left with models wearing hats from Karrueche’s new line...and he was spotted (right) wearing a hat from her collection over the weekend. He has also been Instagramming photos of some gear from her collection.

 Somehow I expect to see a bunch of super sexy, make-Chris-jealous Instagram shots in the coming days. -->