Rihanna and Chris Brown seemed very comfortable with one another at the Grammy 2013 award show. The controversial couple were happy and smiley as they snuggled in the audience at the Grammy 2013. Rihanna, however, seemed to be sporting a diamond ring on her left ring finger, most noticeably during her performance of "Stay." Reports are suggesting perhaps Rihanna and her beau became engaged?

Rihanna and Chris Brown were all smiles at the Grammy 2013 in LA on Feb. 10. RIhanna, who arrived without Brown, was spotted wearing numerous rings on her finger as she walked the red carpet. However, during her perfomance of "Stay," all but one of those rings remained on her finger... her left ring finger. The Barbadian singer wore a silver, diamond ring band.

"Is that a wedding ring on Rihanna?" one Twitter user posted.

"Rihanna is wearing a diamond on her left ring finger. Really?" another posted.

"Hope that's just an accessory," another fan added.

It has been four years since Chris Brown infamously assualted Rihanna. On Feb. 8, 2009, news broke out on the violent encounter Rihanna had with Brown, who was also her boyfriend at the time. However, Rihanna and Brown clearly still have love for each other.

Watch Rihanna perform "Stay" at the Grammy 2013 show.