We understand your urgency and desire for unity in your marriage. Let's first go to God in prayer.
"Dear Heavenly Father, we come before you in the name of Jesus Christ, lifting up this sister and her husband. We first thank you for the gift of this marriage and your desire to use your children to further your kingdom. Lord, nothing is too difficult for you. We ask that this man would be convicted of his sin and see his need for a savior. We ask that he would come to know Jesus Christ as his Lord and Savior and be born again. Lord, melt his heart, melt every single part of his heart towards his wife. We ask that you will make these two be in total unity and agreement in Jesus Christ.
Lord, we pray for your blessing and protection over their relationship, their marriage, and their future together and individually. We pray that this man would have eyes, heart, love, affection, and desire for his wife and his wife alone. Lord, we pray that this man's desire, lust, and soul ties for other women would be destroyed in the name of Jesus Christ. We pray that this man would be pure before God. Lord, we pray all these things in the mighty name of Jesus Christ. Amen."
Sister, we must be careful to examine our prayers to ensure they are biblical and godly. It is important to remember that we cannot force someone to become a Christian, as that is a personal choice each individual must make. However, we can certainly pray for God to work in their hearts and draw them to Himself. As the Word of God says, "No one can come to me unless the Father who sent me draws him, and I will raise him up in the last day" John 6:44 WEB.
Remember to always pray in the name of Jesus Christ. This is the only way to access God. It is written, "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me" John 14:6 WEB.
God calls wives to submit to their husbands in everything, and husbands to love their wives just as Christ loved the church. Sister, ensure that you are being a godly wife, showing love and respect to your husband, just as the bible commands us to do. As it is written, "Nevertheless, let each one of you love his wife even as himself; and let the wife see that she respects her husband" Ephesians 5:33 WEB.
Regarding your husband's temptations, if you catch your husband in any sin, follow the instruction in the Word of God. "Brothers, if a man is overtaken in a fault, you who are spiritual, restore such a one in a spirit of gentleness; looking to yourself so that you also aren't tempted" Galatians 6:1 WEB.
In addition, ensure that you both are planted in a good church, where you can both grow and be held accountable. As it is written, "not forsaking our own assembling together, as the custom of some is, but exhorting one another; and so much the more, as you see the Day approaching" Hebrews 10:25 WEB.
Stand strong in faith, keep praying, and trust God for his timing. May God bless you and your marriage.
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. 
