Severus sighed, pushing his hair out of his face. "Well, I'm in your flat, so I suppose I should be the one to leave," he replied after a moment. He realised he hadn't been very positive with his last statements, but Lily shouldn't blame him. He really didn't see how they could possibly get home.
He stood slowly, sliding his wand away into his pocket and frowning at her. "If you need help again, Evans, you know how to reach me." He nodded his head at her before heading for the door. It was clear to him that she was done and after that, he was too.