2 Cor6: 14-15 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
After teaching singles about marriage in a youth conference years back, a lady asked to know if she can marry an unbeliever who is caring and loving. She told me that the christian brother she loved was not forthcoming as regards marriage proposal but another guy who is not born again was pestering her for marriage and he appears caring and loving. I told her to perish the idea because what she was contemplating is against the laid down principles of the scriptures.
There are so many singles in the body of Christ today who doesn't care about the faith their suitor practices. I'm seeing a growing trend of "love is all that matters". Well, as far as God is concerned as regards marriage, salvation precedes marital "love". Besides, no unbeliever can love you with the love of Christ: "Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the word", Ephesians 5:25-26 KJV. Get this clear, no unbeliever have the capacity to love you as Christ loved the church. That love is a cleansing and sanctifying love.
Right from under the old covenant, God forbade His children from forming a marriage alliance with the ungodly and those that weren't under the covenant. Solomon tried it and his love for God became cold, 1 Kings11:1-6. Don't let the devil tell you that you'll convert and marry him. You are not a converter, that's the work of the Holy Spirit. If an unbeliever promises to convert because of marriage, it is not because he is convinced about marriage but because of what he want. Don't be deceived about what looks like "love" that is not real love. The devil may point your attention to couples of mixed faith that are doing fine. What you see outwardly may not be a true reflection of what is happening in their homes. There may be silent regrets and pains unknown to you. Don't be deceived.
Father, I will not fall into the marital trap of the enemy in Jesus name.