Wilkes had to stop himself from rolling his eyes. He couldn't even describe how much more important sex was, and didn't she have other clothes?
Regardless, he set her on her feet just inside the door of her dorm and went back to the common room, shirt unbuttoned and all, muttering about "stupid Ravenclaws and their logic" as he scooped up her clothes and headed back to her room. One had to keep the girl happy if one wanted to get laid.