You can see he grabbed her boob as she instinctively puts her hand on her chest afterwards. Don't know whether it was intentional or not but he deserved it.
How did he grab her boob if his hand is nowhere to be seen?
It looks like his hand would be on her back.. stop making excuses.. rihanna acted irrational..
Watch closely. He tried to sneakily squeeze her boob and take a photo of that. That's rude. Rihanna does that with fans but only when she does under appropriate circumstances.
he got it easy, I would have hit him 
