Rihanna has fuelled rumours she's rekindled her romance with Chris Brown by tweeting a picture of the singer in bed. The Barbadian singer split from Chris in 2009 after he admitted assaulting her but the pair are thought to have become close again in recent months, and have even collaborated for a track on her new album Unapologetic. Although she recently insisted she is still single, Ri-Ri has now tweeted a snap which appears to show a shirtless Chris sprawled face down on a bed. The photo shows a man thought to be the RnB star lying on a Simpsons Duvet, with other paraphernalia from the animated series visible, and is headed "Bart Obsessed". The man is resting his head on a Bart Simpson jacket - and Chris is seen wearing the same coat in another picture he posted on his own account. The pair have both insisted they are not back together after speculation about a possible reunion emerged. Earlier this month Rihanna appeared on Ellen DeGeneres' chat show in the US and declared she is not dating anybody right now.
