Photo: Caulfield/WireImage

It didn't take long for Britney Spears to get back into the dating game. The pop tart (who has dyed her hair black) has been spotted hooking up with music producer, Jonathan Rotem. JR is currently working on Brit's new album, but you'll never guess who else's album he was involved with -- K-Fed's Playing With Fire. (Boy, does she know how to pick the perfect rebound guy!) Brit and JR caught smooching by the paparazzi on their dinner-and-a-movie date on Sunday, according to Perez Hilton. But wait -- there's more! Brit was seen heading to JR's apartment at 3 a.m., according to X17 Online, and didn't reemerge for the rest of the night.