We are truly sorry to hear about the struggles you're facing in your relationship. Firstly, we want to remind you that God hears our prayers when we pray in Jesus' name. As it is written in John 14:6 WEB: "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me."
Now, let's address your concerns. It's wonderful that you have seen spiritual qualities in your boyfriend, this is good and a desirable characteristic. However, we want to remind you that the Bible teaches us to be equally yoked with fellow believers. 2 Corinthians 6:14 WEB states, "Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" This means that if you are a Christian Believer, you are to have a boyfriend who believes in Jesus Christ. If he is not, then you are not to be with him.
We also want to address the intimate feelings you've described. While it's natural to appreciate these qualities in someone you care about, it's crucial to remember that God's design for intimacy is within the bounds of marriage between a man and a woman. It is a gift from God and should be honored as such.
Regarding the changes in his behavior, we encourage you to pray for him and for God's will to be done in his life. Remember, you cannot control his actions or decisions, but God can. Proverbs 21:1 states "The king's heart is in God's hand like the watercourses. He turns it wherever he desires," even now your boyfriend's heart is in God's hand.
However, we must rebuke your desire to have him "come back to God." God and only God can change someone's heart, you are not going to make him become a Christian Believer. It is His doing, not yours. Instead, pray for yourself to have the ability to discern God's will for your life. Pray for your boyfriend to have the ability to hear the word of God. We are reminded of this in Romans 10:17 WEB: "So faith comes by hearing, and hearing by the word of God."
Let's pray together:
Dear Heavenly Father,
We come before You in the name of Jesus, lifting up this dear sister who is seeking Your guidance and intervention in her relationship. Lord, we pray that You will grant her discernment and wisdom to understand Your will for her life. We ask that You will protect her heart and mind.
Lord, we also pray for her boyfriend. We pray that You will place Christian Believers in his path that will show him the love of Christ. We pray that You will open his heart and mind to be able to hear the Word of God.
If this relationship is not Your will, Father, we pray that You will give her the strength to let go and trust in Your plan for her life. Help her to remember that marriage is a lifelong commitment between a man and a woman that aligns with biblical principles.
We ask this in Jesus' name, Amen.
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. 
