Because first I'm pretty sure he wanted to kill me, and then we were sort of on the same side, and then he saved my life, and then I saved his life, and I guess he's been helping us a lot lately, and... it's just weird, okay? Because he's not really someone you can even associate with the word "friend".
[ARE THEY FRIENDS OH GOD HE HASN'T THOUGHT ABOUT THIS DEREK HAS JUST KINDA BEEN THERE. LOOMING. AND MAKING BAD DECISIONS BUT HELPING AND THEY ARE LIKE FIGHT-BUDDIES WITH A MUTUAL LIFE-SAVING PACT AND OH GOD NOW HE WILL SPEND SLEEPLESS NIGHTS THINKING ABOUT THIS BECAUSE IT MUST BE DETERMINED. or maybe he'll just ask Scott.]