Om Swami
Should I wait for an apology before I move on from being hurt?
Don't live in the past
Even if the person came and apologised, it may heal you to some degree but it can't undo the scar. You have a choice: live in your past, live in your present, or keep worrying about the future.
Even if that person were to come and apologise, it may heal you to some degree, but it won't really fix your problem. It can't undo the scar.