The Lord is near to the broken-hearted, and saves the crushed in spirit.- Psalm 34:18

When someone you love breaks your heart and betrays your trust, you're in a vulnerable place. And the enemy will try to use this to get you to do 4 things that will hurt you even more, derail you spiritually and rob you of God's blessing.

1. Isolate yourself, wrap yourself in grief and avoid others, out of embarrassment at failure, or not wanting them to see your pain.
2. Lose your sense of trust, and suspect the motives of everyone around you, and those you meet.
3. Cause a root of bitterness to spring up in you, that will effect every relationship you have.

   See to it that no one fails to obtain the grace of God; that no root of bitterness springs up and causes trouble, and through it many become defiled.- Hebrews 12:15

4. Make you strike back, seeking revenge and get even, rendering evil for evil.

   See that none of you repays evil for evil, but always seek to do good to one another and to all. - 1 Thessalonians 5:15

Don't do it! Instead stand on God's word and remember the verse at the top and His other promises:

Then shall the young women rejoice in the dance, and the young men and the old shall be merry.
I will turn their mourning into joy, I will comfort them, and give them gladness for sorrow.- Jeremiah 31:13

“The Spirit of the Lord is upon me; he has appointed me to preach Good News to the poor; he has sent me to heal the brokenhearted and to announce that captives shall be released and the blind shall see, that the downtrodden shall be freed from their oppressors, and that God is ready to give blessings to all who come to him.” -Luke 4:18-19

Stop being mean, bad-tempered, and angry. Quarreling, harsh words, and dislike of others should have no place in your lives. Instead, be kind to each other, tenderhearted, forgiving one another, just as God has forgiven you because you belong to Christ.- Ephesians 4:31-32

So has someone done you wrong? Forgive them - Let it Go! Every time it or they come up in your mind, remind yourself you have forgiven them! Keep on forgiving them, at the same time if it is not a spouse, and they are continuing to hurt you, remove them from your life, cut them off, make it clear you want nothing more to do with them. Forgive them but don't let them continue to hurt you. Worse case scenario, pray about it and change jobs, trespass them, move house or do what you must to avoid them. If it is a spouse....I highly recommend you watch the movie, 'Fireproof', then get 'The Love Dare' and try it, and don't stop praying!