Chris Brown was reportedly spotted with Karrueche Tran on Sunday after the 2013 Billboard Awards.
The exes, who split in October, have reportedly been spending more time together and taking things slowly following Brown's split from Rihanna. The singer was seen with Tran at Bank nightclub at the Bellagio in Las Vegas at a party hosted by singer Bruno Mars.
"Brown was standing on the banquette dancing with Tran," one onlooker told The New York Post's Page Six. "He bent down a few times to kiss her, and kept running his hand through her hair and singing to her."
Rihanna, 25, reportedly ended her on-and-off relationship with Brown due to his friendship with Tran. The Bajan singer and Brown split in 2009 due to a domestic assault incident and reconciled in January 2013.
In October, Tran, 25, was left heartbroken when Brown, 24, admittedly ended their relationship over Rihanna, 25. In May, Brown left Rihanna heartbroken when he announced their split during an interview with Australian radio hosts Kyle & Jackie O Show.
"The way I look at it is, I'm always going to love that person, but people have differences, and people have different wants and needs, at the end of the day she's a young girl," Brown said.
"I can't really be focused on wife-ing somebody that young, and I'm young too," he added.
Despite the heart break and alleged trust issues, Tran is said to be optimistic about a reconciliation.
"That's her dearest friend, her ex and yes, she loves him. I know she would love to be back with him but it's probably not the right time, not right now," a source said. "I think Chris needs some time to, as he says, do him and really focus on himself. Karrueche will always be there for Chris."