To revive a relationship, forgivneess has to be given. Look at the example of Joseph & his brothers.(Gen 37-50)

Ephesians 4:32 AMPC

[32] And become useful and helpful and kind to one another, tenderhearted (compassionate, understanding, loving-hearted), forgiving one another [readily and freely], as God in Christ forgave you.

Colossians 3:13 NCV

[13] Bear with each other, and forgive each other. If someone does wrong to you, forgive that person because the Lord forgave you.

Matthew 18:21-22 AMPC

[21] Then Peter came up to Him and said, Lord, how many times may my brother sin against me and I forgive him and let it go? [As many as] up to seven times? [22] Jesus answered him, I tell you, not up to seven times, but seventy times seven! [Gen. 4:24.]

Quotes-Love is an act of endless forgiveness.

 - Forgiveness is not an occasional act, it is a constant attitude