There's no such thing as the person who never messed anything up in a relationship before. Some mistakes are unforgiveable and impossible to forget. But other more minor mistakes can and should be left in the past if the relationship is to survive. The worst thing you can do is say you forgive and then hold your partner's mistake over their head until the end of time. Forgiving is good, but forgetting and moving past it is just as important.
This is especially relevant for small blunders that didn't betray your trust or your relationship in any way. If a woman knows she can go to you when she has messed up and you will show her kindness and forgiveness, it is a beautiful thing that will help your relationship thrive in the long run.