Peter blinks when she seems to relent. He sees that dumbfounded smirk on her face, but he actually hadn't expected that to work. A tiny smile tugs across his own face as he lifts himself up on his tiptoes and then back down on the heels of his feet again.

"And dangerous." He fills in as if pointing out the obvious. If it is potentially stupid, it is likely dangerous, but he doesn't look like he blames her. Peter is the sort to do something stupid and dangerous if it means doing what needs to be done. It is why there is a little smirk pulling across his face now. "The Lizard Man was created due to genetically engineering with animals resulting in this formula and Dr. Connors tested it out too soon and the results with him were not great. And it was... my fault."

He releases a breath then, shaking his head as he bites down on his lip hard.

Kind of a big confession.