I think this is perhaps very close to what might happen. You become close to someone, and slowly fall in love even if that wasn't 'the plan' at the start. I very nearly felt sorry for Ginny. I liked the slow progression from mere lack of hostility to genuine affection between Severus and Harry. And as much as we know everyone is gay ;) I like the way they really fell for each other, the fact that it was another man wasn't the issue-it was the person they came to love. Really well done.