An almost smile came to his lips at that noise and Booker reminded himself to talk about what Kit liked a little bit later. For now, he was going to enjoy being at the hands of another person, under their wants. While he liked being the one to initiate things and give the other person as much attention as possible, he was starting to like this way of things too. At least, until he forgot about it and his fingers were scrabbling at the tree at the bite, a soft hiss coming from him. He hadn't expected him to bite him like that but he liked the shock nonetheless.
Panting for show, he nodded a handful of times before letting his hand go around the back of Kit's neck at the base of his skull. He understood perfectly. Booker was one for letting his mouth get used. Not looking away, he moved his hips a few times, a groan coming at the first scrape of fangs against such delicate skin. The cautionary movements were followed by ones a little more sure of himself, hips thrusting forward into Kit's mouth like he was used to it. Straight and sure. "So good." He couldn't even look away.