Karrueche Tran has broken up with Chris Brown and she changed her number. According to TMZ … Karrueche exploded when Chris recently “liked” 2 fan photos on Instagram of Rihanna and him together. She was unhappy for a long time … as sources put it, because “Chris acts immature, like a child.” She thinks he’s ruining his life by spending more time partying than making music. He went to St. Tropez this week and took a very good friend of Karrueche’s along for the ride. And he made a point to be photographed with her … making sure Karrueche would see it. She’s changed her phone number so Chris couldn’t contact her.