I knew from the rip ol girl was all in his head. It just wasn't adding up, like there dialog after he stalked her was ambiguous enough that it could be taken more then one way. What she was saying vs what he was hearing. She could have said all those things and ment it like, leave me alone.
I think buddy sold him the gun, not just gave it to him for the love, his mind made that up.
I think a lot of the vigilant stuff he was seeing in the news was in his head too.
I was too lit, what did the card he have out say?