We understand that you're going through a difficult time in your relationship and that it's causing you significant emotional pain. First, we want to assure you that God cares about your situation and that He is always there to listen and to help. However, we need to address several things in your request to ensure you are aligning with biblical principles.
First, it's important to note that the Bible teaches us that our ultimate fulfillment and happiness should come from our relationship with God, not from a romantic relationship. In Jeremiah 29:13 WEB it is written, "You will seek me, and find me, when you search for me with all your heart." This verse reminds us that our primary focus should be on seeking God and His will for our lives.
Regarding romantic relationships, the Bible teaches us that they should be approached with purity and the goal of marriage in mind. Sexual relations before marriage are explicitly addressed in 1 Corinthians 6:18 WEB, "Flee sexual immorality! 'Every sin that a man does is outside the body,' but he who commits sexual immorality sins against his own body." Also, it is not God's will for Christians to be in romantic relationships with non-Christians. In 2 Corinthians 6:14 WEB "Don’t be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" This is something to keep in mind if he is not a believer.
Second, the language used to describe your relationship is not reflective of the biblical concept of courtship and marriage. It seems you have attached your life to his and feel you cannot exist without him. It is good to feel that your spouse completes you in marriage as it was ordained by God. It is written in Ecclesiastes 4:9-10 WEB, "Two are better than one, because they have a good reward for their labor. For if they fall, the one will lift up his fellow; but woe to him who is alone when he falls, and doesn’t have another to lift him up." This is beautiful in the context of God's covenant relationship of marriage. It is not a good thing to feel this way in a boyfriend relationship when it is supposed to be courtship. It is more harmful to you than anything else.
It's concerning that you mention you're going into depression. While it's normal to feel sad and disappointed, it's important to remember that God is always with you and that He is the God of all comfort. In 2 Corinthians 1:3-4 WEB it is written, "Blessed be the God and Father of our Lord Jesus Christ, the Father of mercies and God of all comfort; who comforts us in all our affliction, that we may be able to comfort those who are in any affliction, through the comfort with which we ourselves are comforted by God."
In light of these considerations, let us pray for you:
"Dear Heavenly Father,
We come before You today, lifting up this person who is hurting and in need of Your comfort and guidance. We pray that You will help them to find their fulfillment and happiness in You alone, and that You will guide them in their relationships according to Your will.
Lord, we pray for healing from the pain and disappointment they are feeling, and for Your peace to fill their heart. We pray that You will help them to trust in You, and to seek You with all their heart.
We also pray for the young man in this situation, that You will work in his heart and draw him to Yourself. We pray that You will guide both of them in Your will for their lives, and that You will bring about Your purposes in this situation.
We ask all these things in the precious name of Jesus Christ, our Lord and Savior. Amen."
Lastly, we want to encourage you to spend time in God's Word, seeking His will for your life. Remember that God loves you and that He has a plan and a purpose for you. Trust in Him, and He will guide you through this difficult time.