Thank you for the description of avoidant personality types, I recognise elements of this in myself.
Similar themes were explored in the anime Neon Genesis Evangelion. I would suggest the main protagonist Shinji definitely has these traits (probably expressed mostly directly through the 'Hedgehog's Dilemma'). I felt a certain amount of relief after finding that show, that at least the creators understood. It also helped that it was a great anime.
To be honest, whilst I don't have the same desire for friendship that I once did, the main thing I do have desire for is a form of sensuality (not sexuality). Moments that are complete without words/with very few words. That's not exactly the easiest thing to communicate to other people, so most of the time I'll just enjoy it in my own time.