R&B stars Rihanna and Drake may not be together anymore, but it looks like another ex-boyfriend might be trying to win the "Diamonds" singer back.

Is Rihanna Scared Of Running Into Chris Brown?

On Tuesday, Mirror reported that Chris Brown, who's been romantically linked to Rihanna before, could be making attempts to win over his ex-girlfriend again. He apparently made an appearance to Pasadena for Rihanna's concert alongside Eminem for the Monster tour.

"Chris turned up to the second show and watched it from the crowd, but he made his way backstage after the gig was finished to be closer to Rihanna," a source said. "He was making a huge effort to see her and be seen with her again."

Were Drake & Chris Brown Planning To 'Diss' Rihanna?

It also turns out that one of the reasons Brown may have broken up with his recent girlfriend Karrueche Tran was because of Rihanna. He reportedly has high hopes that he and the "We Found Love" star will evetually live happily ever after.

"He's been texting her loads since he got out of prison last month and she is part of the reason he broke up with Karrueche," the source said. "He's drawn to her and believes that they're meant to be together."

There's no word yet if any of this information is true, but the site pointed out that back in 2009, Brown violently beat Rihanna. So odds are likely that not many fans will be supportive of them getting back together. As of now, only time will tell if the two will end up sharing mutual romantic feelings for each other at some point.

Tags: Rihanna Drake Chris Brown