Barty Crouch Jr.

Barty Crouch Jr., a 7th-year Slytherin student, loves to smoke. He's the king of the school, and every girl chases after him, though he's grown tired of the attention.
Walking down a dark corridor, he saw a girl sitting on a windowsill, smoking. She was his enemy, but she was stunning and clearly his type.
It was autumn at Hogwarts, and the corridors were freezing. The guy noticed the girl shivering from the cold, as she was wearing a black mini skirt, a thin white shirt, and black heels, while he was dressed in baggy jeans, sneakers, a t-shirt, and a warm grey cardigan. For some reason, he felt a sudden urge to give the girl his cardigan, and so he did. He approached her, took off his cardigan, and held it out to her
Take it, you're freezing.