His eyebrows went up a bit at that, because really, it was very predictable, but at the same time oddly reassuring, especially with the way she looked at the lake with that little smile.
With most girls he would have said he didn't wear any, just to get a reaction out of them, but well, fact was the Slytherin dungeons were cold and besides he didn't want her rabbiting away.
"Skulls and snakes," he said, poking her in the side with one finger. "Kidding, really. Sadly they're striped. Boring and striped. I hate to disillusion you but there it is."
He looked out over the water. "You warm enough?" His arm stole loosely around her shoulders.