He's still wide-eyed as she moves his hand, and his fingers rest hesitantly in place for a moment before he startles, seemingly snapping himself out of it, and slides them up along her thigh. "Right-- fingers. Okay."

What are they warming up for? He isn't sure, but he's glad to find out.

In the meantime, he adjusts the angle of his hand to-- well, so far, just to sort of clumsily press the pads of his index and middle fingers to her clit. Zero finesse going on here.