Opposites
Written for the LJ 5trueloves community, for the prompt "shadow/light".
He was the shadow, she was the light. They were opposites – Gryffindor and Slytherin, teacher and student, but they loved each other, though it was wrong. It was wrong, but right, at the same time.
He had made the first move, slipping into her chambers late one night. He had known that she was attracted to him, too – he wasn't a Legilimens for nothing, after all. He knew that she wouldn't refuse his affection, no matter how much it might ruffle her morals.
Yes, they were opposites, but wasn't it always said that opposites attract? It certainly was true in this case.