Twice-married Drew Barrymore, who battled drug and alcohol addiction as a child, admits that she’s lousy with relationships. She told OK! magazine: “I’ve never really understood how I should feel or behave in a relationship. I didn’t have the kind of childhood which would have given me any perspective on what a happy home life or relationship would feel like. My father was literally out of his mind and my mother was more like a friend. She’d take me out to clubs and I wound up feeling like part of this very unreal kind of world, although that was the only world I ever knew growing up.” Last July Barrymore ended a year-long relationship with her He’s Just Not That Into You co-star, Justin Long.