Statistically Unlikely Events That Happened to Everyday People

This is it. This is the story I needed in order to redeem my least favorite category and turn it into a favorite. Until now, I thought people meeting unlikely acquaintances was the least interesting form of coincidence, but this crazy story might finally be enough to change my mind.

Three roommates from three countries living together without previous acquaintance. And all three of them know one other person who each of them met in three other countries. The only thing that could make this all better is confirmation that when they lived together, it was in the U.S.A.