Forgiveness in Marriage is Essential

"Don't treasure up past wrongs, reprocessing them again and again.
In a marriage relationship, festering is destructive; forgiving is divine
(see D&C 64:9-10). Plead for the guidance of the Spirit of the Lord to
forgive wrongs . . . , to overcome faults, and to strengthen
relationships."

(Dallin H. Oaks, "Divorce," Ensign, May 2007, 72)