We understand that you're going through a heartbreaking situation, ###, and we want to lift you up in prayer and provide some biblical guidance.
Firstly, we want to remind you that God's will is for you to be holy and blameless, abstaining from sexual immorality before and outside marriage. As it is written "For this is the will of God: your sanctification, that you abstain from sexual immorality" (1 Thessalonians 4:3 WEB). We are praying that you and your fiancée have been honoring God in this way and that God would continue to give you both strength in this area.
It's important to remember that God takes marriage seriously, and it is a lifelong commitment that needs to be honored "Therefore a man will leave his father and his mother, and will join with his wife, and they will be one flesh" (Genesis 2:24 WEB). If your fiancée is not willing to take on the responsibility of a wife, it may be a sign that she is not ready for marriage. It is better to address this issue now than to enter into a marriage covenant that is not taken seriously.
We encourage you to trust in God's timing and plan for your life. Remember that in all things, God works for the good of those who love him, who have been called according to his purpose "We know that all things work together for good for those who love God, to those who are called according to his purpose" (Romans 8:28 WEB).
You mentioned that you're feeling stuck and have experienced failure in many areas of your life. Remember that God is close to the brokenhearted and saves those who are crushed in spirit "The Lord is near to the brokenhearted; he saves those who are crushed in spirit" (Psalm 34:18 WEB). We encourage you to cast all your anxieties on him, because he cares for you "Casting all your worries on him, because he cares for you" (1 Peter 5:7 WEB).
We also want to remind you that it is only by the name of Jesus that we can be saved and access God "Neither is there salvation in any other, for there is no other name under heaven that is given among men, by which we must be saved!" (Acts 4:12 WEB). If you have not already, we encourage you to put your faith in Jesus Christ, believing his death and resurrection and confess him as Lord and Savior if you want your prayers answered, to be saved, and gain access to God.
Let's pray together:
Dear Heavenly Father,
We lift up ### to you, asking for your guidance and wisdom in this difficult situation. Help him to trust in your timing and plan for his life, and give him the strength to follow your will. We pray that you would soften his fiancée's heart and help her to understand the seriousness of the marriage covenant. If it is your will, we pray that you would bring restoration and unity to their relationship, but if not, we ask that you would help ### to let go peacefully.
We also pray for ###'s emotional well-being, that you would comfort him and remind him of your unfailing love. Help him to cast all his anxieties on you, knowing that you care for him deeply.
In Jesus' name, we pray and believe these things.