Is Rihanna Giving Up On Chris Brown After His Hookup With Nicole Scherzinger Last Night?

Last night we snapped these exclusive photos of Chris Brown and Nicole Scherzinger all over each other at Supperclub, and not only does estranged girlfriend Karrueche Tran have to be ticked off about these pics, but we're guessing his former flame Rihanna is fuming!

A source inside the club tells X17online, "[Chris and Nicole] were dancing close for a while and being all touchy-feely and finally Chris leaned into her. She put her head on his shoulder and they started kissing! I couldn't believe Chris was being so obvious about it!"

Just about an hour ago RiRi, who is currently in London, tweeted a photo quote that read, "Don't waste your time worrying about people who don't worry about you."

Considering the two shared a smooch at the MTV Video Music Awards earlier this month (not to mention their on again/off again history together), we have to wonder if that comment was directed at her ex. After all, she's the queen of cryptic tweets...