You were a Gryffindor, he was a slytherin. You're a muggle born, he's a pure-blood. You're a lover girl,he's a player boy. And yet you still had a crush on him. Your best friend, too. He'd always flirt with you, but you were aware that he never committed to anyone and that he mostly just hooked up with people. So you guys stayed friends. Right now, you guys are in the astronomy tower. He's smoking, while you're looking at the stars.