It is God-honoring when relationships are reconciled , and that doesn't just refer to marriages. Shouldn't THAT be our main goal...to bring honor and glory to God? If you have reached out in an effort to reconcile, but the other party has neglected to reciprocate, God will still bless you for desiring to honor Him. God will deal with them, and their spiritual lives will be hampered because of their hardened heart.
At the end of the day, honoring God leads to good things. Anything else leads to confusion, emotional exhaustion, and a lack of good things. Lisa TerKeurst
Ephesians 4:26-32“In your anger do not sin”: Do not let the sun go down while you are still angry, and do not give the devil a foothold. He who has been stealing must steal no longer, but must work, doing something useful with his own hands, that he may have something to share with those in need.Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.
God tells us He will handle the situation for us. He knows how to speak to their heart and deal with their sin, and we do not want to interfere with God's work. Our acts of revenge, bitterness, and hostility only reap us more negativity.
Sometimes the person that committed the offense acts as if the reaction they received to the hurt they caused is worse than their offense. What we have to realize is that when we made the choice to rebel against God's way, part of the consequences of that sin is that person's reaction. We resent the reaction to our sin until we fully acknowledge our willful and deliberate choice to sin caused pain which triggered a response. Once we focus on our sin, their reaction shrinks in comparison. Then, we are able to find forgiveness for the reaction. Forgiveness requires humility.