If you have forgiven them, why do you bring it back up?
Jesus forgave you of all your trespasses, each and ever single one, and forgot them all, not holding you to any promises you vowed, or any sins you committed. It should not be hard for you to do the same.
Once forgiven that thing has no more power over the person, but if you bring it up, you put them back in bondage again, even though you said you had forgiven them.
Don't even bring it up!! Forgive and you will be forgiven!
May Jesus bless you.