Coincidence, faith or what?

World is big and full with people.... I am agree with that. But I think that we have our circle where we will meet certain amount of people and that circle is connected to other circles and became a chain. The connection is not fix, it can be disconnected and then connected with other circle. Is it time that has the power to connect and to disconnect or ourselves which have an option to choose in which circle we want to be and which circle we want to connect? 

I remember when I was in elementary school I had a very close friend for many years, I knew her family well and she also knew my family well. Then we attended different junior high school, I thought I was still her close friend until one day I phoned her on her birthday and played game ' guess who am I' and I got a replied 'who are you? don't make a joke or I will close this phone.' and then another replied from her new friends said the same thing. So maybe at that time we were not in the same circle. When we met again in senior high school, she and I totally became a stranger. I have several stories like that but not all of them have bad ending.
Now, I have many chains in my life and the unique thing is most of the time, the only connection between those chain is only me. Sometimes I tried to bring people from one chain to other chain and that works but failure is not impossible. Until now, I am still looking for the chain which I can perfectly fit in so that I can call that home. Until that time, I address my self as an traveler.