This was definitely not something Severus had expected to happen. He had expected to study with Lily and then they would go their own way, but he really had not expected to end up being hugged by the redhead.
He wasn't sure what to do now, he was not the comforting kind of person, which boy his age really was? He could not just sit there like a log so he patted Lily's back awkwardly in a comforting gesture.
"It is not your fault..." He knew it was all Potter and Black.