By that time you really won't care.
Under circumstances where you have had multiple breakups with your ex it is very likely that he believes that everything that can be discussed, has been discussed already and that there is no benefit in having the same conversation repeatedly.
They erased you from their lives, so that they could be happy and not constantly reminded of how they actually met.
He had to brake up with me after I confronted him on his cheating habits and he accused me of going out with my workmate.
And after which he stated giving me silly excuses.
That would really be a bummer, and gloating about it would make you a lesser person.