Chris Brown and Karrueche Tran are no longer dating, according to the latest Internet rumor. A source told New York Daily News' Confidenti@l that Tran dumped Brown after Rihanna secretly visited him in rehab.

The 24-year-old singer checked into a Malibu rehab facility in early November for anger management and drug recovery, the Daily News reports. In late February, a judge told the singer he had to stay an additional two months.

According to rumors, Rihanna visited the facility in December but a source told the Daily News that it wasn't true; she actually stopped by in January. Reportedly the "Stay" singer hopped on a private plane and spent a few hours talking to Brown at the facility.

The source claims that the two tried to keep the visit under wraps and only a few employees knew she was coming. Immediately after the visit, RiRi reportedly hopped back on the plane and left. When Tran found out, she broke up with him.

"With Chris in rehab, [he] and Karrueche spoke every day and she stood by his side," the source said. "She took a vacation to Turks and Calcos and told friends the entire time that they were really good and happy together. She trusts Chris, but when it comes to Rihanna, she has a zero-tolerance policy. Then she found out about the trip."

The source said that Tran "despises" Rihanna because of how often Brown flips back and forth between the two. The "Love More" singer has dated both women off and on over several years, often times breaking up with one to begin dating the other.

Tran hinted at her single status recently after rumors surfaced that she was dating basketball player Brandon Jennings. She took to Twitter to tell fans that she was "not dating anyone stop w the bs."

Brown has not mentioned the split on Twitter but rumors claim that he stopped following her on the social networking site. Reportedly, Brown is trying to win Tran back but she has been avoiding his phone calls, the Daily News reports.