The problem is not sex but marriage. What is marriage? Marriage is not what many think.
Marriage as per God is on the basis of "..when two or three agree, God is in their midst (as a witness)..." And specifically when a man is bound to a woman through love, when the two agree to be together. Marriage is not a wedding- weddings are traditions of men that is mostly applied in place of God's law and are generally evil in this end times.
A boyfriend and a girlfriend are already married as long as they agree to be together and consummate their marriage with sex. This makes your poll null and void because your idea of marriage is different from what God has said. Garden of Eden is a perfect example of marriage and was overseen by God. So, a marriage is overseen by God only; the reason God says "...let no man separate what God has joined..."
1. Breaking up with a girlfriend or boyfriend is divorce
2. Weddings and marriage certificates or divorce certificates do not mean anything positive spiritually but only serve to fulfill the law of the land (statutory). But let's be careful even as we give Caesar what belongs to him lest we forget God because weddings have become an oath taking/promise making ceremonies yet we have no control of the future. Jesus said it is evil.