While she's clearly still on the defensive about being asked Chris Brown questions by reporters who have nothing better to focus on, that doesn't mean Rihanna and her ex-boyfriend are cool.

To wit, the former lovers came face to face at Greystone Manor, in West Hollywood, last Sunday, and according to spies on the scene, they spent the night giving each other dirty looks. Brown had his girlfriend Karrueche Tran in tow, so that might have had something to do with it.

“Chris and Rihanna sat a few tables away from each other and shot dirty looks at each other all night," said a source. "No one saw them actually interact. Rihanna was escorted to the bathroom multiple times and walked by Chris’ table each time, not even batting an eyelash.”

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