Chris Brown wished former (and possibly current) flame Rihanna a happy birthday in a very public way: on Twitter. Not only did Breezy wish Robyn (Rihanna's real first name) well, he also released his 'Turn Up the Music' remix on her special day -- and she's featured on it. On the remix, RiRi sings the second verse and joins Brown on the hook. While it can be argued that their personal lives may not entangle well together, they certainly make good music together. The duo announced the remix on Twitter, with Rihanna posting the link with the message, "@chrisbrown Turn up the music remix #RihannaNavy #TeamBreezy enjoy!!!"

Brown's remix comes hot on the heels of a publicized possible reunion for the notorious volatile former couple. Brown and Rihanna reportedly spent four hours together in her dressing room during Grammy rehearsals and have been sending loved up tweets to one another for ages now. Rumors have been rampant since January that they've been hooking up on the sly -- something Brown's girlfriend, Karrueche Tran, denies.

'Turn Up the Music' isn't the only music the pair will be making together. Breezy is the feature on RiRi's upcoming 'Birthday Cake' remix, a decision that came under massive backlash from both fans and critics alike.

Listen to Chris Brown feat. Rihanna, 'Turn Up the Music' (Remix)