Rihanna 'won't let go of Chris Brown'

Rihanna has apparently been contacting ex-boyfriend Chris Brown relentlessly in the hope of reuniting.

The 'Talk That Talk' singer has reportedly started calling and texting Brown, even going so far as to spend time with him as he records new music.

"Not only has she initiated a Twitter conversation with Chris for all to see, but she has gone to see him," a source told Life & Style.

"She stopped by his studio recently - twice. She's also calling and texting him a lot. She won't let go."

The insider went on to claim that Brown has not returned Rihanna's advances, adding: "She's trying to break up Chris and his girlfriend, Karrueche [Tran]. Chris is happy, but Rihanna keeps playing her games to make trouble. It's become an issue."

Though she previously insisted that she would never speak to Brown again, Rihanna was recently warned against reuniting with the R&B singer.

She has vowed to "find a man" and quit smoking in 2012.

Watch Rihanna's video for 'You Da One' below: