Who is in the wrong?

[Kobra]

A little more than a month ago, my best friend's (we're like brothers, 7 years) attitude and the way he started treated people started changing (let's call him Paul). Not for the good either. Some of his friends (I don't know them well) came up to me, and said "can you please tell Paul to stop being a dick and a smart-ass to everyone?" I said I would, and then I waited a week. I had asked another close friend of ours to help me and he said to wait another week to see if it continues. Paul made a mistake and started being an asshole to me. Our other friend confronted him about it, publicly, and that night he posts on Facebook about how he hates sensitivity and how he hates having to walk on eggshells around people. I ended up talking to him and he revealed that he believes this whole thing was my fault. After that, I had gotten upset and defensive, and I had said somethings that shouldn't have been said, and I admit I was wrong for saying that. I had apologized to him for doing what I was asked to do, and he says I am wrong for even talking to him about his attitude. He says he is smart enough to know if he has changed or not. I am extremely upset about this because we were such close friends. We are never going to be the same again, but I don't know what to do anymore. All I can think about right now is the quote "lose on friend, lose all friends, lose yourself.", Please, any advice or experiences you have had, please share with me. And who is "right"? Me, or him?

[StoppingTime]

Well, he was not right to accuse you of talking to him about something he didn't want to hear about. That, in itself, just shows his arrogance. However, I wouldn't be too quick to jump to judgements and conclusions, yet.

Do you know if there is anything in his life (family related, school, etc...) that could be causing him stress, pain, or hardship? Not that these are valid excuses to act like he did, but he may have been going through a rough time. Do you think there is any way you could talk to him about that?
If he blows you off again, than honestly, he isn't worth your time.

[Kobra]

We talked about everything, and unless he was griefed on Minecraft, there was nothing bad going on in his life. He actually has a great life. Class president, ranked 3rd in class, no stress, parents are together.

[Lolli]

He obviously isn't smart enough to know he has changed.
I know you want your friend as he was back, so tell him that your his mate and will stand by but that he can't expect you to support him in his attitude problem

[Desuetude]

We talked about everything, and unless he was griefed on Minecraft, there was nothing bad going on in his life. He actually has a great life. Class president, ranked 3rd in class, no stress, parents are together.
Everything? Are you sure, some people hide things deep down. You can't say there was nothing bad going on in his life, there might be things he hasn't told you about. Maybe give him some space? You've apoligised and you can see he's being childish about it. Sometimes people don't realise that they've changed, I suppose it's harder to evaluate yourself when you're with you 24/7, other people see things more clearly. I've had friends who I thought were amazing and we would be friends for life and then they backstab and make fun of me, sometimes we can't change who people become and instead have to let them go. Give it time, you never know he might realise what he's done wrong and apoligise to you.

[Kobra]

For all I know, my friend could have read this. He called me up a bit earlier, and apologized, then I went over his house, and we hugged it out. Thanks guys, I really appreciate it.