I've been meaning to comment on this for the longest time, and finally! the atmosphere of this piece is so hot, it just haunts me. The colours you've used - the ambiguity of Snape and Harry, both of them. I love this almost-evil Snape. The man has such presence that, if done right (and this is sooo right), he looms, he is darkness and sex and everything that can make people nervous, even when he's behaving himself! Whether he's behaving here? Only you know that. For myself - I think there is consent, even if after the fact. Does that make any sense? Well, I think it does. I think Harry would do it all again, and that, to me, is good enough for consent. Lovely!