You said Carter's brother wastes his money on shit like drugs for him and his girlfriend, when you said you did the same exact thing. I guess you are just as "wasteful". Anyways, I just think your friend Carter was covering up for his brother because maybe he was afraid something bad was going to happen (if it truly was his brother who did it); he looks like he had fairly decent intentions at this point. But you need to teach your friend a lesson and get him to pay sometimes, no? Good luck.