His eyebrows raised at that. Undo his shirt huh? Because he could even react Snape was up and moving over towards him. His eyes followed Snape's hands as the undid his shirt. He took a small breath in as a wave of nervous hit him. None of which showed on his face of course. What was it about Gryffindor that made them foolishly brave?

He gently shivered as he felt that long finger tracing his scar. Which, hopefully would fade in time. For now, he just said it he cut himself on a tree branch after Remus's "night". Sirius's reached out his own hand to gently trace that evident mark on Snape's neck.

"I think I got you back pretty good. Don't you Severus?"

He said the name for the first time. Letting it drip from his lips almost at a whisper.