The 23-year-old singer split with Brown in 2009 after he attacked her, but had her restraining order against him lifted in February so that they could both go to the Grammys.
However, a source told Now magazine that they have been seeing more of each other and are even thinking of getting back together.
'Ri-Ri's always loved Chris - that never changed,' said the insider. 'They've texted and Skyped each other a lot recently and met up at a mutual friend's house in Los Angeles after the restraining order expired.
'Ri-Ri wants to be with Chris but is worried about her career and fans.
'She's trying to find a way to take him back publicly without letting down her supporters, her management and her friends, or setting a bad example.
'Chris has said he'll be as patient as she needs him to be, but after being slammed on Twitter for just following him, she's begun to worry that they may never get to be together in public.'