'unequally yolked' is going out or being married with a person who isn't CHristian. It is wrong because the Word of God speaks against it. Why? it is a HUGE door open for Satan. Just as it is easy to convert or convince someone to Christianity, it is easy to convert someone out. It has been researched and studied before that most relationships that are unequally yolked(study performed with Christians) The results have shown that most Christians left the church or even converted into the spouse's or partner's religion. The devil is smart. He will try to get you any way he can. Don't let it happen to you.