Snape said, "I thought you weren't trying to seduce me."
"I'm diplomatically not-mentioning I have a hard-on you could hammer nails with," said Harry. "So as to make things easier for you."
(The writing style's a bit choppy and needs some work in transition, but not too bad so far.)
EDIT! *dies laughing*
"Neville is not some evil all-powerful monster whose tentacles of malice reach all over Hogwarts."
Severus looked at him sideways. "Are you sure?"