( Stiles / Derek ) Fine. I'll try. That's all I can promise.
That's not you. Okay? You're not responsible for everyone else. What the Alpha Pack does is on them. They're a bunch of psychos who do awful crap, and that's on them. Not you. Stop blaming yourself for everything everyone else does. As for Peter? You were a teenager who lost his whole family. And then you are a guy with the emotional maturity of a teenager who had lost his sister. You're allowed to miss some things.