Too scared for the possibilities... More like bad possibilities..
maybe you're a little bit unsociable
do I look like a jehovas witness?
Haaa, I can't help but laugh at that.
Keep pain out?
Because your afraid that they might hurt you?
maybe you have trust issues
Because you've been wounded in the past and now your guard is up permanently.
hmmm, good question. Take time to look within yourself for the source of those wounds. Meditate on the experiences, listen to your heart and make an effort to forgive the people/circumstances that caused them. Take responsibility for your own actions in those situations and with those people. I know it sounds a little hippy-ish but do some visualizations of opening your heart. Imagine all the pain you've felt pouring out like the destruction of a river dam. Or something like that... :D
Your in the best place for any kind of social anxiety , this being a major highway your on a social network that I personally found it transforming , you may well be seeking to trust but afraid too, or perhaps your afraid to be judged or have a call for detailed explanations, are you a quiet young man.
you are afraid to go out!