Well, my situation is so different, I'm not sure how much help I could possibly be, but in the event it does...

I saw the woman who was to become my wife and knew. It was instant recognition. So, I wasted no time; I went up to her and informed her I was going to spend the rest of my life with her. That was thirty years ago. Best decision of my life.

Now, for a more practical suggestion: I have found that pen pals - old fashioned letter writing, is a very effective way of meeting people for us introverted folks. People, both you and whoever, tend to open up and share more in letters - breaking down walls that we tend to keep up in person. Good luck!