Chris Brown 'really happy' with ex

Chris Brown has apparently happily returned to on-off lover Karrueche Tran following his breakup with Rihanna.

Chris recently confirmed his romance with Rihanna is no more.

The 24-year-old star said he is simply too young to consider "wife-ing" anybody.

Chris, Rihanna and model Karrueche have been involved in a contentious love triangle for a couple of years.

It was widely reported the trio engaged in activities that would purposefully send one another into a jealous fury.

The Billboard Music Awards took place in Las Vegas over the weekend and following the event Chris and Karrueche partied together at The Bellagio resort's The Bank Nightclub.

"He was also in a great mood and looked really happy with Karrueche," an eyewitness told America's OK! magazine.
Bruno Mars was also in attendance at the glamorous venue.

It appears that all of the partygoers were particularly festive that evening.

"[Bruno] was in a really good mood and was dancing around and having fun with his friends at his table," an attendee told the publication. "He was really friendly."

Chris celebrated his May 5 birthday with Karrueche.

In recent weeks the R&B star unfollowed Rihanna on Twitter. Chris and Rihanna initially split after he assaulted her in 2009. There was intense speculation they had reconciled in 2012 and she confirmed the news in January, claiming she knew what she was doing and he had changed.