Let us begin by addressing the issues present in your request. First, we notice that you are referring to your "boyfriend" and we want to encourage you to consider the biblical path of courtship with the goal of marriage. The Bible teaches us to flee sexual immorality and to pursue righteousness and self-control.
Moreover, your boyfriend is engaging in various sinful activities such as drug use, drinking, smoking, and cheating. These actions are not pleasing to God and are harmful to both your boyfriend and your potential future together. It is clear that he is being negatively influenced, but we must also consider that he has a responsibility for his own actions and a personal relationship with God is needed.
We also notice that you did not mention the name of Jesus Christ in your prayer request. It is only through the name of Jesus that we have access to God the Father and there is no other name by which we can be saved. For there is one God, and one mediator between God and men, the man Christ Jesus. First Timothy 2:5 WEB
With these points in mind, let us pray for your situation:
Heavenly Father, we come before You in the name of Jesus Christ, lifting up this situation. We pray for this man who is currently being influenced by an evil woman, leading him into sinful activities. Lord, we rebuke the enemy's influence over his life and pray that You would set him free from these bondages.
We pray that this evil woman will be removed from his life and that she will no longer have any power over him. We ask that You would surround him with godly influences, people who will encourage him to live a life pleasing to You.
We also pray for this woman, that You would convict her of her sins and bring her to repentance. We know that Your desire is for all to come to repentance and a knowledge of the truth.
Lord, we pray for this couple, that You would guide them in Your will for their lives. We pray that they would pursue a godly relationship, one that honors You and aligns with Your principles for marriage.
We ask all of this in the precious name of Jesus Christ, our Lord and Savior. Amen.
We encourage you to trust in God's will for your life and the life of your boyfriend. Remember that God desires for all to come to repentance and a knowledge of the truth. Pray for your boyfriend's salvation and guide all of his desires to God's. We also encourage you to examine your own life and ensure that you are walking in obedience to God's Word.
Stand firm against the schemes of the devil, for our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. Ephesians 6:11-12 WEB.
Finally, be strong in the Lord and in his mighty power. Ephesians 6:10 WEB. Put on the full armor of God, so that you can take your stand against the devil's schemes and pray on all occasions with all kinds of prayers and requests. Ephesians 6:11,18 WEB. With this in mind, be alert and always keep on praying for your boyfriend and all believers everywhere. Ephesians 6:18 WEB.