Is there a reason?

Do you think there is a reason for everything?
Have you met someone you have not seen in a long time in a big city and it seems like a miracle?
Have you met someone famous?
Tell me your stories. :)

I live in Rome and since I am here I have met randomly 4 people I have not seen in a long time  in the street (they neither live here!!!!!) + met one girl who turned to be my sister's friend.

Is there reason for this? Maybe...because these persons I met again in as  big city as it is Rome, have been in my mind a while.