Chris Brown's love triangle continues. After attending the Grammys with girlfriend Rihanna on Feb. 10, less than a week later, a report has come out that he spent the weekend in Houston with his ex-girlfriend Karreuche Tran.

Brown and Tran may have done more than just party in Houston while Rihanna was in London presenting her first fashion line, according to a report. While Rihanna was overseas to debut Rihanna for River Island runway show during London Fashion Week on Saturday, Feb. 16., Brown partied at Avenue in Houston while Tran was spotted at another Houston hotspot locale.

The former couple may have partied separately, but another report provided proof that the couple might have stayed in the same Houston mansion despite not being photographed together.

Brown's friends posted pictures of themselves with the Don't Judge Me singer at a mansion he rented in Houston during NBA All Star Weekend. Hollywood Life provided photos of the mansion's exterior that resembles the same balcony he and his friends took pictures on, as well as the interior which is identical to the picture of a wall Tran posted a picture of on Twitter then later deleted. Tran was also photographed in Houston wearing what appears to be Brown's necklace on Sunday, Feb.17.

If Brown and Tran reconciled, it would shock music fans because he appeared to have put Tran aside to focus on his relationship with Rihanna exclusively since January. A source close to Rihanna agreed and said the Diamonds singer trusts Brown when it comes to Tran.

"Things between [Rihanna] and Chris are tight and there's no need for her to be mad or insecure," a source told Hollywood Life. "One thing Rihanna has a lot for Chris is trust. They got this. They're on point with their relationship. She knows Chris already told [Karrueche] it's over between them so she's not even tripping."

Two weeks ago, Rihanna and Brown partied together at a club and left when Tran showed up to avoid a confrontation. On Feb. 10, they sat front row at the Grammys together. When the Bajan beauty performed her latest single Stay at the awards ceremony and wore a single band on her ring finger, it caused speculation that she and Brown were engaged.

Their relationship took an interesting turn, however, when Brown attend the Los Angeles opening of Top Shop/Top Man solo on Feb. 13 and the couple were seen in the same nightclub but didn't party together later that night. Rihanna reportedly hit Blok night club after attending a Ne-Yo concert without Brown in Los Angeles the next night on Valentine's Day.

Tags: Chris Brown and Rihanna Karreuche Tran