More than a possible kiss. Aradia means to do it, she wants to do it, and that gives her enough of a reassurance that he wants her to do it too. She knows why her chest feels strangely warm and knows that her knees would feel a little weak if she were standing up.

"Oh, ok. I can fix that."

When he'd kissed her under the mistletoe he was gentle, and she didn't ask for any more than that now. She covers his mouth with her own, soft and careful and lingering there, not demanding any more than that he accept it if he didn't want to give anything.