"I still did it." An echo of an echo, and Billy would probably understand how complicated those feelings were.

He watched Billy shift closer, weighed it against the way he acted when he found the Soldier, the ferocity and desperation in his hug. The idea of someone worrying about him wasn't completely foreign but it was novel. "I'm still here." A beat. "Come closer, you can prove it to yourself. I promise not to hurt you."

He steadfastly ignored the ache that the idea of hiding behind Billy caused. He should be able to take care of himself and his needs.