I cut off my ex from my life years ago. The end was a bit weird from my part.I carried on by burying all my feelings.Only recently did I let go of that relationship in the real sense.I never ever want that person in my life again. The problem is that everyday I feel like I should explain why the ending was the way it was ,to him for me to sleep peacefully at night.

I am in such a dilemma as to if I should casually say hello and explain it briefly on facebook. It will definitely put me at ease over this whole relationship. But then I am also opening the channel for communication for future,which is a terrible idea.
I feel like I can die peacefully in my old age, if I explain and get rid of this issue once in and for all. But cannot imagine having him in my life any longer. I cannot decide what to do.

Some friends say to let it go and some say I should briefly explain.What is the best way to deal with this problem?