It's about him being so much in love with this girl that he has this psycho persona to him thoughout the song. "I wish I was myself again." seems to be him saying I don't want to be "psychotic" and you destroyed me. He loved her and when she got tired of his obsessive ways she left. He's saying its all her fault that she left and now that he's like this.
It's about him being so much in love with this girl that he has this psycho persona to him thoughout the song. "I wish I was myself again." seems to be him saying I don't want to be "psychotic" and you destroyed me. He loved her and when she got tired of his obsessive ways she left. He's saying its all her fault that she left and now that he's like this.