Welcome! I'm sorry you've had such bad experiences with people. No wonder you're feeling some paranoia. However, to my way of thinking, the best way to deal with it is to try to make some friends, chat with folks, and get involved in some fun things in a place like this one. You will find some other folks who also have had some experiences where they feel like they have been burned by others, too.
Have you actually been diagnosed with "Paranoid Personality Disorder"? If not, then you will probably want to post in other forums.