Actor Luke Wilson finds it so difficult to break up with unwanted girlfriends, he treats them badly until they dump him. The Royal Tenenbaums star, who has dated Drew Barrymore and Gwyneth Paltrow, admits that he doesn't always act in a mature manner when he is in a relationship. He says, "Even if I want out, I don't have the guts to leave. I just start acting really surly and cranky until they leave me. I don't think anything's over the line when you want out. You see the fence and you just start running for it. "I'd say you need 90 days. It's almost like double time, though, because three months feels like six months because your so horrible to be with."