I didn't meet another CFer until I was 16. We went to the same doctor, were the same age, and his family lived just a couple streets north of us. Unfortunately, about the time we met was when the whole cepacia thing got to be a huge deal and we were no longer allowed to see each other. He died before he turned 18.
I hadn't met another CFer in person until about 6 months ago. So that makes for an 11 year gap in between. I'm thankful that there are online things like this where we can "meet" over the internet even though we cannot be together in person.