Mary actually didn't have to feign a look of surprise, because frankly, hearing that coming from Remus was a surprise no matter how you looked at it.
And then she had to remind herself that he didn't know that she knew that he knew.
And yeah, that was complicated.
And hell, it was a good thing she had told Sirius, because if she hadn't, the bastard would right now be toying with a friend's emotions, and that wasn't a nice thing at all. Ponce.
"You want to kiss me," she said, meeting his eyes and then lowering hers so she wouldn't laugh or worse throw something at him.