My husband and i made a pact when we first started dating, that we would never bring up the past in future arguments. isaiah 43:18 "Forget the former things; do not dwell on the past."
Sometimes it's hard enough forgiving yourself, but when your significant other throws it in your face, it hurts. When someone says they are sorry, take it, and let it be done. Job 9:27 . . . "i will forget my complaint, i will change my expression, and smile."
The measure in which we forgive others, will be the way we are forgiven. i don't know about you but i make allot of mistakes, and i don't want any of them hanging over my head, reminding me how i failed. Mathew 6:12 "And forgive us our debts, as we also have forgiven our debtors."
So when you are reminded of past sins that you have asked for forgiveness from. Just say out loud "it is forgiven". Take back your freedom. Don't let your guilt hold you back or keep you down any longer, forgive yourself, and forget!
Luke 7:48 "Then Jesus said to her, "You are forgiven."