"That? I kissed you, it's what humans do to people they... like in a certain sort of way," she wasn't about to go into all the different ways and conditions that came with that sort of thing. He was confused enough as it was.
As for the other thing, though. She wasn't exactly sure of the best way to go about this. "It'll all fall into place once your body starts realising it's human..."
Taking hold of his hand, she placed it on her chest, lightly squeezing to give him the right sort of idea. With any luck, that wouldn't spook him...