I have met people who dated unbelievers which is wrong.
The unbeliever decided to become a Christian to marry their Christian love. After the marriage, the unsaved spouse went right back into their old life because they only "converted" to be accepted by the family of the Christian fiance.
It is highly suspect when someone becomes a Christian merely to marry someone.
I did this when I was young, I became Catholic to marry a Catholic. Neither of us was saved but the story is similar. I became Catholic to fit in with my husband and his family. A few years later I became born again and left the Catholic church. This happens to people who become Christian to marry a Christian, they are not dedicated because they are doing it for impressing someone rather than the conviction of sin by Christ.
Many young women become astonished when their spouse who became a Christian to marry them watch their marriage fall apart. The husband does not lead, he loves worldly things and does not speak about the Lord. Even worse he even acts angry when his Christian wife wants him to read the Bible with her.
Remember that an unsaved spouse will lead your children away from Christ no matter what they say or how many times they attend church. Our churches are full of the children of people who were superficial in their walk at home with family.
When the saved spouse wishes to train their children in the Lord by the standards of the Bible, God's word, the unsaved spouse will fight it. That spouse will negate the teachings of the other parent in front of the children, perhaps if only by remaining silent when they should have supported the parent who wanted Christ in the lives of their children.
Unsaved people and pretenders, those that profess Christianity but are not saved, will influence the children against Christ.
For a believer to marry an unsaved person or a pretender, is to disobey God. Those who love the Lord will seek God in prayer while testing any potential spouse to see if they are truly saved. God will warn anyone who wants to know.
If the physical attraction is the only reason to like someone then you will miss all the blatant clues that someone is not walking with God.
Young people, if you think you might like someone seek God first. Test the spirit in the person as to whether or not they love the Word or just like you. It's flattering for someone to like us, but it is also disarming, causing us to refrain from evaluating them or testing them to see if they are genuinely in the faith.
Proverbs 29:5
"A man who flatters his neighbor spreads a net for his feet."
Proverbs 26:24-28
"Whoever hates disguises himself with his lips and harbors deceit in his heart; when he speaks graciously, believe him not, for there are seven abominations in his heart; though his hatred is covered with deception, his wickedness will be exposed in the assembly. Whoever digs a pit will fall into it, and a stone will come back on him who starts it rolling. A lying tongue hates its victims, and a flattering mouth works ruin."
Lastly, be willing to wait on God to bring someone to you, stay in prayer, and be willing to wait, wait, and wait. I am here to tell you it is better to wait for a spouse than to be stuck in a terrible marriage with a person who does not love God. Because friends, if they don't love God they will not love you God's way.