Harry sighed and hesitated until Luna put a hand on his arm. Smiling briefly, he explained, "Blaise is an incubus. That means more than needing sex to survive. His magic comes from a demonic source, and if this part of him is not convinced that I am worthy of being his master, he will not submit to me. From the power he could draw off our connection, he could cause havoc I would ultimately be responsible for. Yes, you are right, I was cruel, and I revelled in it. He did not show me the deference I am owed, and that made me angry. But he will sleep it off, and tomorrow will not be worse for wear. I would never do him any lasting damage. Let that be enough, Severus."