Mental concentration H has, and yes, he is proud of it.
He doesn't really hang out with anyone, he's the nitpicker. His perfectionism and pedantism can be very useful in certain situations, and he uses it to his advantage. Most of the people that he sort of 'hangs around' are musicians. I think it's sort of like a kid outside a candy store. He gets a kick of associating with them, and they take advantage of the skills he offers. I would feel sorry for him...except I know he has a lot of potential (not necessarily musically, but in many areas) and I know I can't do anything for him.
I dont' really think H has anyone that he confides in. Those friends he did have when we started dating have for the most part been sort of left by the wayside, I've been the one to keep up any social ties. He 'socializes' by working. His collegues in his day job are mostly women, and I think he has a very hard time socializing with them.
I have seen him conduct himself in a very sociable, charismatic manner, then afterwards give me a lecture on how I was out of line by what I said, did, or whatever. I used to think there was some hope in this because he would act nicely when we went out, now I think it's more likely he was just trying to keep up appearances. I'm pretty cynical right now.
It really feels as though he wants the benefits of being a family man without any of the responsibilities. I remember him saying while I was pgnt with D9 that now that he was going to be a father, he had to better himself - meaning apparently, he had to become involved in any number of organizations, have more kids, and make it look to the outside world that he was a successful family man, no matter how he behaved behind closed doors.