You're Harry

You were in Draco's room last night, doing some activities. Since you were, you were late to class and grabbed the wrong tie running in class, putting it on.

You: "Sorry, Professor, I'm late it won't happen aga-"

Draco: "Harry.."

You look down to see you grabbed Draco's tie. You quickly took it off and put on your Gryffindor tie, then Draco took his back, wrapping it around his finger, then putting it back on.

Draco: "Try not to steal any more of my ties, Potter."