"We are likely to have started out socially awkward - failing to automatically perceive all the social subtleties that our normal cohort noticed instinctively. Some of us have figured out social belonging using parts of our brain not adapted for this purpose; but most of us experience the normal human ache for social belonging, friendship, bonding, and sex, even more so if we have been unlucky in securing it. "

http://theviewfromhell.blogspot.com/2012/09/trying-to-see-through-unified-theory-of.html