Despite their confirmed separation, Rihanna and Chris Brown continue to show signs that they're not quite over their turbulent split since Karrueche Tran entered the picture.

Recently Chris Brown and new girlfriend Karrueche partied at the BET after-party after the 24-year-old singer won the Fandamonium award for the fourth year in a row.

"Chris was definitely in a good mood, and [Karrueche] was as well," says a source to HollywoodLife. "They acted like a couple as they held hands, exchanged cute glances and were touchy all night."

"Many of their friends and super-large bodyguards surrounded Chris' area. He was having a blast and he loved it when DJ Nick Cannon played a medley of Chris' music."

But one thing he won't be touching any time soon is Rihanna's world famous booty, which she showed off in a recent Instagram video while twerking to a song featuring her ex-lover Drake.

According to New York Post, the video was posted by friend and photographer Melissa Forde while the ladies partied in Paris earlier this week.

Many respective fans are taking the video as indirect jibe at Chris Brown, given the recent altercation between him and rapper Drake.

But officially, Rihanna still affirms she's past the break-up and doesn't care what Brown is doing with Tran.

"Rihanna doesn't care about anything Chris is doing. She's out here in Germany, getting on with her life and touring. She wishes him well, but she doesn't want to see anything he's doing."

What do you think? Are Rihanna and Chris Brown over each other, or are they acting out to get over the pain of not being together?