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Sorry, Rihanna!

Chris Brown and Karrueche Tran are back on in a big way.

The R&B singer and his on again, off again model girlfriend reunited after Chris' most recent breakup with Rihanna. According to TMZ, Karrueche has already moved into Chris' Hollywood Hills pad (yes, the one with the monster graffiti).

The couple recently attended the Billboard Music Awards together and has been spotted out and about in Los Angeles, so they're certainly not making an attempt to keep the whole thing quiet.

Since the breakup, Rihanna has been posting extra scandalous pictures to her Instagram account--perhaps in an attempt to show Chris what he's missing.

Given the history of Chris' relationships with both women, something tells us this love triangle still has some more surprises in store.

Which couple do you like better: Chris and Karrueche or Chris and RiRi?

Gallery | Guess That Celeb Instagram!

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