advice for closure ...

I want closure but i dont know how he would feel as he is married. We didnt get to say bye properly..  and i want to tell my ex what exactly had happened ..
but i dont know how he would react now...he has a family dont know much about him now... i dont want him back but 
before i die i just want that peace of satisfaction ..should i leave it or find out his wereabouts
any advice.,,,