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.

News.com.au claims that a source in the US close to the two artists' managers confirmed the possibility of a live duet.

It's a definite possibility, said the source. But it won't be decided until the last minute.

Chris Brown is headlining the Hip-hop festival alongside Missy Eliot, P Diddy, T Pain, Ice Cube, Ludacris, Rick Ross, Trey Songz, Kelly Rowland, Lupe Fiasco, Big Sean and Naughty By Nature. The festival will tour Australia this summer starting in Brisbane on Sat. April 14 at RNA Showgrounds. The tour will then continue to Sydney (Sun April 15 at ANZ Stadium), Melbourne (Sat April 21) and Perth (Sun April 22 at the Joondalup Arena).

The duo's respective managers are reportedly trying to launch partnership outside of the US, where Rihanna and Chris have been facing some serious backlash from friends, fans and family over their private relationship. The Australia concert may be their first chance to debut a live collaboration to their fans abroad.

The question is: How will the crowd react if they see Rihanna and Chris Brown together onstage at SupaFest or at any other show? Will their fans cheer or boo RiRi and Breezy?

Check out this video of Chris Brown and Rihanna performing together at the 2009 MTV VMA award show: