Well, he wasn't exactly thinking on having her propped up on her knees, actually, but he's not about to complain either. Leaning back just enough himself, his hand pulls away, settling on the curve of her ass once she's turned herself around.

His lips press to the small of her back, lingering there for a while, his eyes closed as he slowly moves up along her spine, fully intent on kissing every single inch of her while they're here.