Same here..
It used to be so painful for me and I still cry when I get ignored by some people, (I do! they just don't return my calls for DAYS), but now I've come to the realisation that I'm different, not weird, just different. And that different is totally ok and we are needed just the way we are on this (or any other!) planet.
For me all of us together make up parts of an ecosystem. You need the air and the earth and the worm and the bird oh yes did I mention the snake?...all these things that make a beautiful whole working system. People like us are needed too. We have talents and abilities and, well, beingness that is needed. It means we maybe cannot have heaps of people that get us, but hey, we get to have other really cool and profound experiences not possible for those who are so "socially able". We are sometimes the hermits that see the beauty in things. The things behind things. Share it. Write it, sing it, think it, whatever.
If you can try to live your life in a way that is about what you are DOING with your time, not what you're wishing you were doing or who you wished you were doing it with, then maybe it won't hurt so much. You are perfect and exactly how you are supposed to be.