It gave his mind other things to think about when Snape would drone on too long about something horrible. He could have sworn she made her hips sway a bit more than she ever had before as she walked away from him. Which was saying something considering how much these stupid robes hid her figure. It was certainly a way he hadn't noticed any of the other girls move down corridors. But then again, he didn't notice other girls the way he noticed Granger these days. He had to be careful about that. Very few people knew about them, and it should preferably stay that way. He had a hard time schooling his features - and his trousers - on the way back to the dungeons.