Which is worse? The pain of being hurt by someone you love, or the pain in hurting someone you love?
Scar could heal, until one day it is gone, though you might recall still the fault he did to you, but your painful memory gone and replaced. But the pain lingers still in him, though he hurt you, but he pains still. Though he rejoice in you getting over him, but he harbours the guilt, of which he has did you wrong. Mayhap you will feel better knowing that he suffer, mayhap you laugh at him for reason you would care less. Be it so, that is no longer your concern. Good riddance.