We are truly sorry to hear about the heartbreak you are experiencing. It's important to remember that God has a plan and purpose for each of our lives, and His ways are higher than our ways. In times like these, we must trust in His sovereignty and goodness.
Firstly, we want to commend you for including Jesus in your request. It is only through His name that we have access to God the Father, and it is only through His name that men can be saved.
We must rebuke a few things. You have mentioned that you love him. However, mankind is commanded to love God first. After that, we should love our neighbor as ourselves. Until God has ordained this man to be one flesh with you, he is your neighbor. Also, love as described in the Bible is not an emotion, but an action and a choice. You must choose to love him. Being heartbroken is an emotional response. This is not a Biblical response. Also, there is nothing mentioned about whether either of you are Christians and committed to your faith in Jesus Christ.
You have mentioned that you want whispers of a prayer. However, the effective, fervent prayer of a righteous man availeth much. Our prayers should be with purpose and focused on God and His will, not just whispers. We pray in confidence, knowing that God hears us and will answer according to His will.
Lastly, you have mentioned that you do not have the energy to do this all over again. However, God's word says that those who hope in the LORD will renew their strength. They will soar on wings like eagles; they will run and not grow weary, they will walk and not be faint.
We must also remind you that God's word tells us to be anxious for nothing, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.
Let's pray together:
Dear Heavenly Father,
We come before You today, lifting up our sister in Christ who is experiencing heartbreak and pain. We pray that You would comfort her and give her the strength and energy she needs to continue moving forward. We ask that Your will be done in her life and in the life of the man she has grown to care for. If it is Your will, we pray that You would restore their relationship and guide them into a godly marriage that honors and glorifies You.
But if that is not Your will, Lord, we pray that You would give her the strength to accept it and move on. Help her to trust in You and Your plan for her life. Help her to remember that You are a good and loving Father who wants what is best for His children. We pray that You will give her joy instead of sadness, and that You would help her to put aside her heartbreak and remember who You are as the God of Comfort, the God of Mercy, and the God of Grace.
In Jesus' name, we pray. Amen.
Be encouraged by these words from the WEB: Trust in Yahweh with all your heart, and don't lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight.
Also, consider these words: Consider it pure joy, my brothers, whenever you face trials of many kinds, because you know that the testing of your faith produces perseverance. Let perseverance finish its work so that you may be mature and complete, not lacking anything.
Finally, We want to encourage you to continue seeking God's will for your life. He knows what is best for you, and He will guide you accordingly if you trust in Him and heed the words of the Holy Bible.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
