[He might have been amused with how she completely disregards his shirt, but is transfixed by other things. The initial brush of her lips and fingers gives him the chills. Apart from maybe that dream, it's something very new. Due to that it affects him all the more. He could have wished for their kiss to continue on, but he's not going to complain. Above all else, at least in these moments, what she'll notice is the way his heart is pounding so heavily. He knows hers is the very same.
Stopping her isn't something he can consider right now, either. For as much as he's desiring other things all the same.
So what he does continue is steadily, though slowly grinding his hips up to hers. Both hands move a little more down her legs until hooking under the crook of her knees, all in order for her legs to wrap even (still) more snug around him. He can't not shiver with the way he now is pressed up against her and between her legs. Even still clothed he's begun to notice more how completely wet she's become, the scent on its own hanging heavy in the air.
Not wanting to draw her away from her current actions, he leans his head back against the tree, eyes closing.]