I dont understand

I have a really good friend that has decided to play the im your friend/im going to be an asshole card every other week.I will always be here for him but obviously he is having an arguement in his head that he cant decide who wins. So I unfriended him today. Just took myself out of his life so he doesnt have that problem anymore. I hope he comes back. ?He is like a Little Brother to me. I hope him the best. I just dont understand why he is letting all of the turmoil in his mind effect reality. Its not fair to other people. I just dont understand.