Anything wrong with this letteR?

It sounds to me like this friendship ended because of a girl, which means it wasn't a good one to begin with. Girls come and go, and unless she's still there...I wouldn't worry too much about it. Besides some spelling and grammar, there's nothing "wrong" with the letter, but I wouldn't take too much blame for your actions. You're beating yourself up. In my opinion, the best way to resolve instances like this in friendships is just to come right out and say "I'm sorry for this or that" to their face. They can either accept or deny you. The letter won't hurt, because you have A LOT to say...only don't expect him to be so detailed with his feedback.