Whether something happened to you or not, you have changed. You still have to live in a society where you will come across people, live and work with people. I think you may have to accept and reach a place where you can be social to an extent and still be yourself.
It does help to find someone you can be yourself with and talk. I have found a boy-friend who understands because he is a loner. He need his space and such. I have been an introvert all of my life. I like being around people to a certain extent (even crowds, but not much.They exhaust me to be honest.) and do whatever I want to do, but, I always look forward to being by myself. I thrive on it actually. It sounds like you are a loner, but, I am not one to diagnose that.