The ironic thing is that even we on this forum would not necessarily all be good friends with eachhigher just because we share a diagnosis, sad, but true. You need friends or someone to engage with and for those you want to know how to deal with lonliness (ok you do probably have to pay for it) this program was on the BBC recently and would be of some help to you all I think.
https://store.bbc.com/the-age-of-loneliness
Without friends or otherwise romance, too much goes un-experienced in life and you watch on bitterly, enviously or desperately seeking to join the human race and be counted/significant and be heard.