Hands rode the rolling of her hips, sliding down with the roll to squeeze into the meat of her ass, squeezing and pulling at it as he pulled her lips into his; their tongues wrestling with one another, and her sucking lips only causing him to grow that much more intense and aroused by desire. When their lips did eventually part, listening to her, Peter was only half-aware of what was going on, and just seemed to nod at what she was saying.
Before clearing his throat, "Yea... warm up. That sounds like a hell of an idea..."
Though he wasn't exactly letting her go, and drew his hands along her waist again, to the small of her back with one hand, keeping her hips pinned to his as he kissed her lustfully once more. Tongue once again pushing back against hers, breathing in her scent; which, despite the cold water, still managed to smell rather brilliant.
Eventually, though, he was able to pry his lips away and then nodded, "Right. Yes... inside. We should probably get in there before I just take you right here and we celebrate with hypothermia."