Neville, frustratingly, couldn't read much from Snape's expression. He was an auror, he had trained to read people, but Snape's expression was just his usual dour, disapproval of the world around him. It certainly didn't make Neville like him any more.
He could tell though, that Snape was less comfortable with the second bit of information. It was almost understandable. "Along with you."
He went back to his plants briefly, moving the dittany pot back to its place. "Have you turned on him yet? Voldemort?" Neville asked, almost abruptly. He had a feeling that it was long past, Snape looked older than he would have been for that. But he needed to know for sure.