Chris Brown may be rekindling the romance with his ex-girlfriend Karrueche Tran, as reports indicated that the couple attended the Billboard Music Awards Sunday together.

Brown's other ex-girlfriend Rihanna was nominated for ten awards for one of the biggest nights in music history, but she was a no-show. Instead, the Stay With Me singer attended dinner at G. Baldi in Santa Monica.

According to Hollywood Life, Brown arrived to the awards show with Tran, who recently celebrated her 25th birthday over the weekend. Sources said the two spend some time together in Brown's trailer. 

"Chris Brown sent Karrueche to the Billboard Gifting Lounge presented by Kari Feinstein PR at the MGM in Las Vegas on Sunday. They arrived together, and then she stepped out of Brown's trailer into the lounge. Later she was his date to the show. She loved the Vix bikinis and Vega crystal necklaces," the source said

Enstars reported that sources close to the couple said that Brown is trying to get back with Tran.

"He's been initiating contact with her, not the other way around. I wouldn't say Karrueche and Chris are together but they are talking and kicking it," the source said. 

The two have become more close since Brown and Rihanna called it quits, as Brown even reportedly grabbed Tran's butt at a recent concert. 

Brown performed at Wild 94.9's annual Wild Jam in California on May 9, which Tran was spotted there too.

Paparazzi snapped pictures of the former couple. In one image that circulate the net, Brown appeared to be feeling on Tran's butt.  The picture has raised speculation on whether or not the two are rekindling their romance.

During a radio interview with 2Day's The Kyle and Jackie Show on May 5, Brown confirmed the split with Rihanna.

"I mean, at the end of the day, shawty doing her own thang, she on the road," he said.