We are truly sorry to hear about the difficulties you're facing in your relationship. We will stand with you in prayer and offer some biblical guidance.
Firstly, we commend you for inviting the Holy Spirit into your situation and for seeking God's will. It's crucial to remember that God's will is always for our good and His glory, even when it's painful.
The Bible tells us in Ephesians 5: 22-33 about the marriage relationship and how husbands and wives should relate to each other. It says, Wives, be subject to your own husbands, as to the Lord. For the husband is the head of the wife, as Christ also is the head of the assembly, being himself the savior of the body. But as the assembly is subject to Christ, so let the wives also be to their own husbands in everything. Husbands, love your wives, even as Christ also loved the assembly, and gave himself up for it; that he might sanctify it, having cleansed it by the washing of water with the word, that he might present the assembly to himself gloriously, not having spot or wrinkle or any such thing; but that it should be holy and without blemish. Even so ought husbands also to love their own wives as their own bodies. He who loves his own wife loves himself. For no man ever hated his own flesh; but nourishes and cherishes it, even as the Lord also does the assembly; because we are members of his body, of his flesh and bones. For this cause a man will leave his father and mother, and will be joined to his wife. The two will become one flesh. This mystery is great, but I speak concerning Christ and of the assembly.
From your request, it seems that your fiancé has not been willing to put in the effort required to make your relationship work. This is not in line with the biblical principle of how husbands should love their wives. It's important to remember that God wants you to be with someone who will love and cherish you as Christ loves the church.
Let's pray together:
Dear Heavenly Father, we come before you in the name of Jesus, lifting up our sister who is going through a difficult time in her relationship. We pray for Your will to be done in her life. We ask that You would grant her Your grace and peace that surpasses all understanding. We pray for a miracle in her fiancé's heart, that he would turn towards You and become the man You've called him to be. But if that's not Your will, Lord, we ask that You would heal her heart, help her to move forward, and guide her to the spouse that You have prepared for her. In Jesus' name, we pray. Amen.
Be encouraged by the words in Romans 8:28 WEB: We know that all things work together for good for those who love God, to those who are called according to his purpose. Trust that God is working everything out for your good. Keep praying and seeking God's face. He is faithful and will see you through this.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
