TODAY   |  October 06, 2012

Are Chris Brown and Rihanna back together?

When Chris Brown announced he’d broken up with his model girlfriend, all eyes turned to singer Rihanna. A speculation frenzy has ensued among fans, and the news has some relationship experts concerned. NBC’s Diana Alvear reports.

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>>> chris brown and rihanna are two of the most talked about artists in pop music . speculation about a possible reunion between the two stars has their fans abuzz and relationship experts concerned.

>> reporter: it was a statement to explain chris brown 's breakup with this model, but it only served to raise more questions. i have decided to be sing toll focus on my career. i love karru, che very much, but i don't want to see her hurt over my friendship with rihanna . brown seemed to confirm what friends suspected for months, ever since the two began following each other again in twitter. they were both spotted in st. tropez at the same time. and then rihanna 's revealing interview with oprah.

>> what happens when you see him?

>> it's awkward. it's awkward because i still love him.

>> does your heart do this? does your heart do that thing?

>> my stomach drops.

>> in this video he posted to twitter, brown seems just as torn about their situation.

>> you know, when you share history with somebody, you try to fall in love with somebody else, it's kind of difficult.

>> reporter: the reason there's so much interest in their possible reunion lies in the very reason they broke up in the first place. a brutal assault three years ago the night of the grammys that left rihanna bitten, bruised, and bloody.

>> we all remember that picture of rihanna 's face after that domestic violence incident. we can't get that out of our head.

>> reporter: brown was convicted of felony assault, and ordered to stay 50 yards away from rihanna . the order was lifted last year with her consent. while some fans seem excited, some relationship experts are concerned.

>> the message that rihanna is sending to her young female fans is that it's perfectly okay to let a man treat you any way he wants to, he can even hit you, and that's fine, take him back.

>> reporter: as for the woman with whom brown broke up, she's not saying much, tweeting "bye, baby."

>> we reached out to rihanna 's representatives, but they had no comment.