I almost imploded yesterday when I saw Tweets from Chris Brown and Rihanna confirming that they just collaborated on each other's music. Chris Brown is on a remix of Rihanna's track 'Birthday Cake' and Rihanna is on Chris Brown's new version of "Turn Up The Music".  Rihanna's lyrics talk about loving and needing him and Chris' lyrics talk about "missing her body".   Chis' restraining order is off but he's still on probation for assaulting Rihanna back in 2009.