The Bible says that when two people come together in marriage, they become one. In the same way, the husband's body does not belong to him alone but also to his wife. Marriage is actually a church, it is more than being a partnership. A married couple must have spiritual fellowship with each other. This means that married couples should pray and read the Bible together and this is the way to have fellowship together.
Marriage is holy because true marriage is based on love.
It is like the relationship of Jesus with us which is not a game. In this passage, we read that husbands should love their wives just as Christ loved the church and gave Himself to make her holy. If your husband or your wife is not a Christian, do not give up. Act and do your duty as a Christian because by your act, he or she will change and may also become a believer of Jesus. In our society today, many young couples live together but they are not married.