We'd PREFER it if they were just buddies…but we're not so sure we believe it.
THEN, sources close to Chris' girlfriend Karrueche Tran came forward and said that she's "fully aware" of his cheating…but won't break up with him because of it!
"He and Rihanna are just friends. He is with his girlfriend, Karrueche, and is not cheating."
What do U think? Are Chris Brown and Rihanna really JUST FRIENDS???
[Images via WENN.]