"Luna, could you give us a minute?" The girl left the compartment, only to stand guard outside of the door. Harry cast a privacy charm, Tom had taught him. Then he reached for his follower. Looking into his incubus wary eyes, the young man assured, "Listen, Blaise, yes, Luna offered me insight that has proven invaluable already. And yes, she has requested your time, so to speak. But what I've just said still stands. If you have no interest in her, I will not allow her to touch you. You bound yourself to me, and with that promise comes protection. It's your choice, who you sleep with. Always has been, always will be."