As humans we give up so easily on those who reject and hurt us, veiwing them as a lost cause. We can’t forgive and forget, we always hold a record of wrongs.

I am so glad Heavenly Father doesn’t look at us this way. Because of Jesus Christ and his atonement, we are given the opportunity to repent & if we choose to do just that, he loves us even when we have rejected and hurt him. Just as long as we've experienced that change of heart.

Lance B. Wickman, “Today,” Ensign, May 2008, 103–5
"It remains only for you and me to both seek and tender that forgiveness—to both repent and to extend charity to others—which enables us to pass through the door the Savior holds open, thus to cross the threshold from this life into exaltation. Today is the day to forgive others their trespasses, secure in the knowledge that the Lord will thus forgive ours. As Luke significantly recorded, “Be ye therefore merciful” (Luke 6:36; emphasis added). Perfection may elude us here, but we can be merciful. And in the end, repenting and forgiving are among God’s chief requirements of us."