Chris Brown -- I Want Karrueche Back, But She's Playing Hard to Get

Chris Brown has put on a full court press to win back ex-girlfriend Karrueche Tran, but his efforts have been met with resounding rejection.

We're told he's blowing up her phone and her friend's phones, but she's radio silent with him. He's been so frustrated he's turned to social media, complimenting her for all to see. He likes photos she posts and when Karrueche posted the pic below he wrote, "Keep killing it kiddo."

But nothing's worked and he's depressed. But hope springs eternal, and Chris is telling his friends he's not going to date anyone else and is confident Karrueche will come back to him.

Here's the conundrum ... Chris' pride and joy -- his new baby -- is also his Achilles Heel with Karrueche. It's what happens when you knock up the chick you're not dating.