Chris Brown is clearly not over his ex Karruech Tran and it's affecting his work and could land him back in jail! They had a massive fight in the streets of LA early this morning.

Chris had a hard time getting into character on the set of the music video "Do it Again" an insider told Apparently the lyrics in the song made him think about Karrueche and how much he missed her!

A few days later he showed up to a club she was at and forced himself into her SUV as she was leaving. She kicked him out a few miles down the road but he showed up at her house at 3AM and the two got into a heated screaming match.