We understand your pain and sadness, and we commend you for bringing your burden to the Lord. It's important to remember that God desires forgiveness and reconciliation, but He also wants us to align with His will and principles.
Firstly, we notice that you did not mention the name of Jesus Christ in your prayer. It is only through the name of Jesus that we have access to God, as it is written in John 14:6 WEB: "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me." We are saved by believing in Jesus Christ and His death and resurrection has allowed us that access.
Now, let's address your request. We should pray for your loved one to have a heart of forgiveness, but it's crucial to understand that God does not force anyone to forgive or to be in a relationship. He gives each person free will. We should also be cautious of praying to have something destroyed if we do not know what it is.
It's also important to examine the relationship and ensure it aligns with biblical principles. If this person is already married then it is adultery to pursue them. Both of you should be pursuing relationships that align with biblical principles, aiming for godly marriages. If you are a Christian believer and follower of Jesus Christ, it is only appropriate to look for a spouse who meets those qualifications. If the relationship was sexual before then it is fornication and immoral. God created marriage for one man and one women for all of their lives.
Please join us in praying this way:
Heavenly Father, we come before You in the name of Jesus, lifting up Your child who is in pain and sadness. Lord, we pray for the person they care about, that Your Holy Spirit would minister to their heart and grant them a spirit of forgiveness according to Your will. We ask that You would work in their heart according to Your perfect plan and timing. We also pray for Your child, that You would comfort their heart and help them to trust in You completely. Help them to desire Your will above all else, and to align their desires with Your Word. Help them to see if there is sin in the relationship that needs forgiveness and to seek that forgiveness in Jesus' name. It is only through the name of Jesus Christ that we can be saved and have access to God.
In Jesus' name, we pray. Amen.
Be encouraged by these words from the Psalms: "Delight yourself also in Yahweh, and he will give you the desires of your heart. Commit your way to Yahweh. Trust also in him, and he will do this:" Psalm 37:4-5 WEB. Seek God first and trust Him to give you the desires of your heart.