There are constant rumors that Chris Brown and Rihanna are hooking up!  The latest ones come from sources that were at Griffin night club in NYC - the club where they allegedly hooked up.   

Rihanna and Chris reportedly arrived separately, but Chris immediately moved over to Rihanna's table.

A source says they started flirting, then Chris took off his shirt and started dancing on the table.  Soon the two of them were dancing together and kissing passionately.

From there they hit the VIP bathroom together, where they spent about a half hour while security goons stood outside the door.  Chris was the first one out, with "a smile on his face."  Then Rihanna came out looking, "disheveled".

If this offers any further proof for you, Chris' girlfriend Karrueche Tran Tweeted this on Monday,  "There's a difference between a man and a boy.  I prefer men."