A soft sound is all that comes, in consent but also in reaction. He squirms beneath her, not to break free but for more -- to feel this forever. It never lasts as long as his body tells him he'd like it to, and his hand centers around her waist to pull her even closer; to feel his human reaction in its purest bodily form pressing against her thigh in an unmistakable display of wanting. His heart pumps in double-time to compensate for the pull, the arc reactor whirring on as though nothing is happening. The room is eerily quiet beyond that, and all he can do really is cling on until it's over, chin tilting up even further to make even more room for her claim. He's well-versed in the art of hiding the bites, not that he much ventures out during the day as it is.