Rihanna and Chris Brown will barely even admit to be friends, let alone anything else. They don't seem to mind that the cameras have caught the two "canoodling" on several occasions, and Rihanna is even tight with Chris' mom!
But now rumors are swirling that the two might be engaged after Rihanna was photographed wearing a diamond on her ring finger. Well, it's not like they're going to tell the media! So it'll probably just continue to be a guessing game! They do make a great couple though!