Chris Brown, Karrueche: Rihanna Confronts Couple 'Friendship', Wants To 'Walk Away' From Relationship [Photo]

Rihanna may be throwing in the Chris Brown towel. The singer is giving up after seeing photos of Karrueche and Chris Brown in Los Angeles together after spending the holidays with her in Europe and Africa.

 Brown was spotted with his ex-girlfriend Karrueche Tran (whom he originally dumped for Rihanna) at a trade show in Long Beach, California.

According to Hollywoodlife, Brown and Tran had been spotted together in Chris' Porsche at a trade show to promote his clothing line "Black Pyramid". The couple may have ended a romantic relationship, but are still business partners helping each other promote their own clothing lines, according to International Business Times. The excited ex-girlfriend promoting her clothing line "The Kill" tweeted, "Today was pretty awesome. Can't wait for y'all to see!"

The singer wasn't too happy at the photo's posted online and tweeted her personal feelings under a tag, "Bitch don't kill my vibe"