I know exactly how you feel. I am kind of weird in social situations. I don't feel comfortable breaking into conversations, but when I do, I get a bit of diarrhea of the mouth. Then I get all paranoid that I am losing them and don't know how to fix it.
I guess this is a result of being stuck in front of computers in the 80s instead of learning to interact with other kids
Sounds just like me! Misused teenage years and many other them. Still it got my career path going and me out of the supermarkets!