Draegan knew well the effect of his blood on a mortal. He'd given just enough to enhance the boy's senses, flooding his system with intensity. He considered taking advantage of the arousal, but decided against it, as a strategic move. Dangle the carrot, lead the boy along for a while. He couldn't rush him and leave himself with nothing to hold over the boy.
He stood. "As I promised, House. You're free to go. In this case, I will go and leave you to your own devices. I'll be in touch." He reached down to pat Mark's cheek.