This is my second thread. I'm not completely sure of my type yet, however it seems I am an INTP. Now, anyway, I'd like your help to type this friend of mine, just for curiosity.
He has 17 years old (I'm 18) and was my best friend. He's a great passionate of Classical music, he can play the piano really well, even in public, although he says he sweats and feels "nude" when there is someone who is important to him when he plays; otherwise, if he must play only among superficial friends, he seems very extrovert.
He has a very strong personality, nobody ventures to offend him because he knows how to get respect; he likes to treat the others quite bad, not just for joke, since sometimes he's quite cruel. For example, once he met a friend of mine, a girl, who is not exactly a Venus, and told her she was a mobile WC... He liked to mistreat me even when we became close friends, and that's why I "left" him.
He's extremely smart. When you say something to him, for example if you talk about a musician you like, he can destroy your considerations in a few seconds finding mistakes or contradictions, showing a logic who disarms you. When he gives his opinion (and he always does), he expresses it in a strong way, using sarcasm if you want to answer back.
While the others either adore him or hate him, and in general most people see him as a secure person, when we became friends, something got different. One day I decided to "read into him". It's something strange I do sometimes when I want to know someone better. I had already made different suppositions about his story, but they were just "intuitions". So I started to ask him "strange" questions about the past I supposed he had had. I asked him if his father didn't love him, if he was a rich man who had to work all day and didn't have time for him, if his mother had been maltreated by him, if the girl he (my friend) loved was the one I thought to be and so on... He was really sacred, and asked me how could I knew all those things about him. Since then, he revealed to me all his weaknesses. He said to be insecure and depressed, and he told me that music was his only way to survive everyday life. He looked at music in a "mystical" way, also thanks to his "spiritual guide", a philosophy teacher who had changed his life. he started to call me "brother" and to ask my help. However, when he overtook that bad period, he became more secure even with me, and started to criticize me because I was a lonely person who had no social life, saying that social life is very important, that if nobody knows you you have no worth and so on.
This is a short portrait of my "friend".
I think he's an ISFP, or an INTJ, but I would say ISFP because of his extraordinary coordination and his "alpha male" behavior.
What's your opinion?