In Blaise's experience, that was not enough. If he could not prove himself valuable, support could be cut off at any time. The Slytherin had not wanted that, hence his efforts to court Harry. To prove his worth, to entice; something he had learned at his mother's breast. But nothing had worked. Finally, in a last, desperate attempt, he had kissed Harry and had tuned up his powers to the nines, despite having barely anything left. But once more, the "chosen one" had not reacted. As if he was immune to the incubus. Though that did happen on occasion, mostly with people who had no interest in a male companion, Blaise had felt that Harry was different. He could not enchant him because ... why?