I deal with the same thing, the isolation. I have been told I am an enigma, or standoffish, yet inside me I am trying my hardest to be open and friendly. I just can't seem to take off the 'mask' that traps me in myself. I see others (even my own partner) seem to make connections like breathing, I'm lucky if I can make a new friend once a year. I always feel left behind in social situations because I can't seem to keep up with all the required texts and chatting and emails and social visits that it seems to take to actually 'make' a friendship. I can't bring myself to feel motivated to email or text people I meet and I don't know why that is. It's really very lonely and it isn't like I am doing it on purpose or so people seem to think. I just am not my real self with people, and if I do become my real self it is with very few. I feel like an actor, playing the part of a normal person.