He is your cheating bf and he is cold person

Today,You go out to bar at night without his knowledge,you know he gonna be mad if he know this.I saw him, he was humming in front of a large audience. He was handsome with that cold look. Until there was a scene where he pulled a girl's hand onto the stage and that was ur enemy. suddenly...you stop and watch him when he rub her cheek and place his forehead to her and kiss her with passion and laughing together like they love each other.