Tao te Ching: 79

To patch up a great hatred is surely to leave some hatred behind.
How can this be regarded as good?
Therefore the sage keeps the left-hand portion (obligation) of a contract
And does not blame the other party.
Virtuous people attend to their left-hand portions,
While those without virtue attend to other people's mistakes.
"The Way of Heaven has no favorites.
It is always with the good man."

Even if you atone for a mistake, there is something left. There is no such thing as to forgive and forget, barring something that induces amnesia. I suppose one could forgive and have brain trauma, but barring that, we forgive and remember. How much better is it to simply mind our obligations and our own business rather than to cause such a rift?

The Tao isn't a popularity contest. Be a good person and you will be on that path. If you are on that path, then everything is with you and nothing can compete.