If you knew you would, in your 50’s and 60’s, run in people you knew in your 20’s and 30’s, would you treat them differently?  Even if you move half way around the world, that’s how it’s set up.  People come back into our lives decades down the road to give us a chance for a do-over.  If I knew that at age 20, 30 or even 40, I would never have placed blame and held grudges.  When you reconnect, often you find that only one held onto the pain.  Don’t let it be you.