Hi,
Without knowing if your husband has a relationship with Jesus Christ, I will share what God has taught me about my marriage.
Often, difficulties will arise when a new Christian is seeking the Lord and someone may be challenged by this new "relationship". Jesus warned us about our enemy. [John 10:10] The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly."
This doesn't imply that your husband is the enemy but that we all can be tempted and influenced by whatever and whenever the enemy can find a difficulty or sometimes a newness in our walk with Christ. He cannot take your "soul" as you've commited to Jesus Christ but he can make your life more difficult as you learn to trust in and live for our God. That's why it's so important for any Christian, regardless of how long you've known the Lord, to fellowship in Church and to seek friends and mentors from the Church at home groups and Bible studies. Learning from the Bible is how we grow in faith and trust. [Matthew 11:29] helps us to understand this. Jesus tells us often to "learn" about Him.

Heavenly Father, I join in prayer with this troubled sister, that you may pour out your Loving kindness and comfort her during her time of need. I pray that You bring someone into her life to help her during this wonderful time of a "First Love" relationship with You and that she may continue to learn of You, in a new and stronger way, each day. Father, please help her with these struggles in her marriage and strengthen her with hope and confidence that You will be with her through these times. Give her a peace and allow her to be a gentle witness to her husband of Your love and comfort and that he will not be threatened by her new relationship with You but to be encouraged by it.
We ask these things in Jesus's name, Amen