Rihanna and Chris Brown back together and performing duet at SupaFest 2012?
Ever since Rihanna and Chris Brown collaborated on remixes of each other's tracks "Birthday Cake" and "Turn Up The Music," fans and media have been speculating that the two R&B stars were dating again in secret, following their notorious 2009 breakup after Chris Brown punched Rihanna repeatedly while driving his car (according to the police report). Now the news is leaking that RiRi and Breezy may be reuniting on stage this Summer at the SupaFest music festival in Brisbane, Australia. REUTERS

Adding to speculation that Caribbean singer Rihanna is re-uniting with ex-boyfriend Chris Brown was the fact that the ex-couple recently performed for a couple of songs together.

One was a remix of Rihanna's "Birthday Cake" and the other a newer version of Chris Brown's "Turn up the Music".

Earlier, in 2009, a case of Brown assaulting Rihanna led to their break-up. The two were, however, spotted together recently at Rihanna's birthday party.

Moreover, the two have been tweeting as well.

Brown tweeted: "Happy Birthday" to Rihanna, while the singer tweeted back: "Thanks".

Chris Brown is currently dating Karrueche Tran and we have no idea what is happening between Brown and Rihanna. But we would like to know more!