Chris Brown’s concubine, Karrueche Tran, tweeted a silhouette pic of her and Cb sharing a kiss at sunset. “head over heels” reads the caption. But are they really in love, or is Karrueche doing the utmost to convince herself that their love is real?

There have been recent signs that CB’s ex-lover Rihanna is getting to Karrueche, and Chris. As I told you yesterday, a source within CB’s camp told me that he’s “pining away” for his ex. As a result of their unrequited love — and his stalled career — he isn’t eating or sleeping well.

He’s wasting away right in front of us,” said the confidential informant.

“He’s not in love with [Karrueche], he’s in love with Rihanna,” the source added.

I’m told that Brown and Rihanna stay in touch with each other via phone calls and text. They also subliminally tweet each other on Twitter.com. But both of the stars’ handlers have informed them that being seen together in public would kill their careers.

Photos: Twitter.com