Rodolphus and Lily
Lily didn't believe for a moment that James had said it was okay for Rodolphus Lestrange to dance with her. When she had brought it up to him, he'd gone all red in the face and sputtered a few times before she laughed and said not to worry, that she wasn't planning on dancing with him even if he asked. Of course, James had also said that he was going to stick to her side like glue all evening, and he wasn't.
They were in a room full of people though, and Lily certainly could handle herself. "Well, I suppose one dance couldn't hurt," she said carefully, looking him dead in the eyes to ensure he knew that she wasn't about to back down or let him do whatever it was he wanted.