Alcuin was quick about it, and his hair was only slightly damp when he emerged, but he was clean and dressed again.

He walked over to Aaron. "I can't help but notice that you seem a bit uncomfortable," he said gently. "Is there anything you'd like to talk about before I go?"

Opening the door, but also making it clear that he was willing to just leave. If he wanted Aaron to invite him back, he couldn't overstay his welcome.