We are truly sorry to hear about the pain and rejection you have experienced, and we stand with you in prayer to break the curse of unlovability and rejection spoken over your life. First, we want to remind you that God loves you unconditionally and has a plan for your life. In Jeremiah 29:11 (WEB), God says, For I know the thoughts that I think toward you, says Yahweh, thoughts of peace, and not of evil, to give you hope and a future.
However, we must address that the curse you mentioned is not aligning with biblical principles. According to the Bible, no human has the power to curse another if they are in Christ. In Romans 8:38-39 (WEB) it is written, For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, nor height, nor depth, nor any other created thing, will be able to separate us from the love of God, which is in Christ Jesus our Lord.
Moreover, we noticed that you did not mention the name of Jesus Christ in your prayer request. It is only by the name of Jesus that we have access to God. In John 14:6 (WEB), Jesus said, I am the way, the truth, and the life. No one comes to the Father, except through me. Therefore, we encourage you to put your faith in Jesus Christ, for there is no other name under heaven given among men by which we must be saved (Acts 4:12, WEB).
Regarding your relationships, we want to encourage you to trust God's timing and plan. In Psalm 37:4 (WEB), it is written, Delight yourself also in Yahweh, and he will give you the desires of your heart. God's desire for you is to be in a committed marriage with a godly spouse, and He will fulfill this desire in His perfect time. But first, be ye holy for I am holy. Set yourself apart from sin and trust in God's plan.
Let us pray together:
Dear Heavenly Father, we come before You in the name of Jesus Christ, lifting up our sister in need of Your healing and restoration. Lord, we rebuke the lies of the enemy that have been spoken over her life, and we declare that she is loved, accepted, and redeemed by the blood of Jesus Christ. Father, we ask You to heal her heart from the pain of rejection and to give her the strength to forgive her father for the hurt he has caused. Lord, we pray that You would break any ungodly soul ties or agreements that have been made, and that You would set her free from any bondage to unlovability and rejection. Father, we ask You to guide her steps and to bring a godly spouse into her life, in Your perfect timing. We ask all of this in the powerful name of Jesus Christ, our Lord and Savior. Amen.
Be encouraged, for God has a plan and a purpose for your life. Trust in Him, and He will direct your paths.
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. 
