Peter sees the understanding cross her face, and he looks down. It was a long time ago, but death has happened a lot around him. It's happened both around him and because of him. That was one of those times where it was both. Those are things that never really leave him. No matter how long it has been.

He still remembers his Uncle Ben's blood against his palms. He still remembers the promise that Captain Stacy made him make, his last words (Peter would break that promise... which just reminds him of a breaking sound, the sound of a back snapping).

"Uh, yeah," he says after a moment, sliding a hand behind his neck as he releases a slow and shaky breath. "Me too. One of those things where you can't know when you do it everything... it's going to lead to."

Peter had no idea that Captain Stacy would die because he gave the complete formula to Dr. Connors, but it was his fault and he lives with that.