UPDATE: At 3:50PM EST, Rihanna posted this suggestive message on her Twitter page: "#1LOVE RT @TheNoteboook: Feelings that come back are feelings that never truly went away," less than one hour after tweeting about Grammys rehearsal.

As reported by AOL Music, the 2012 Grammy Awards are sure to be full of shocking suprises and memorable moments as always, but one thing that's on our radar ahead of Sunday's (Feb. 12) big show is a possible Rihanna-Chris Brown run-in.

The exes, who are rumored to be back together after their relationship ended in a domestic violence scandal in 2009, are both slated to perform at the event. According to a new report from Hollywood Life, Ri and Breezy are already getting quite cozy backstage as they rehearse for their respective performances!

An alleged insider told the website that Rihanna, 23, and Chris, 22, just spent four hours behind closed doors in a dressing room at Los Angeles' Staples Center, the home of Sunday's awards show. "They care about each other and they do talk a lot, but they feel like they have to hide their feelings for each other," the source reported.

"Rihanna knows everyone will judge her, and even her family and closest friends do not want them to be back together," the insider continued. "Rihanna is afraid if she is seen with Chris it will have a negative impact on her career." Brown, who notoriously beat his then-girlfriend on the eve of the 2009 Grammy Awards, has just been ordered by a judge to remain on supervised probation as mandated in his sentencing for the assault.

The exes have recently been spotted leaving separately from the same club on the same night, and some reports even suggest the pair have been secretly dating for the past year, despite Brown's current relationship with aspiring model Karrueche Tran.

"She is definitely torn. And most likely she will choose her career over Chris," the source said. Well, here's hoping. If anything does go down between Ri and Chris, you know we'll be all over it! Be sure to check back here on Sunday night for full Grammy Awards coverage.

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