Having sex outside of marriage results in serious consequences. One consequence is the immense pain that comes at the end of any sexual relationship. Because you supernaturally bond with every person you have sex with, ending that relationship will result in a tearing of the bond, even if that bond was only created through a one-time act.
Rose Sweet says, "If you're sexually involved after divorce, there is a huge price to pay because sex is not isolated to the sexual act. God designed sex to be a whole person experience. Sex was intended to image God's free, full, faithful, and fruitful love. That four-fold love is only present in marriage. When sex does not reflect these four factors, it hurts everyone from the couple to the children to society. So, why subject yourself to a few moments of pleasure for months or years of pain?"
The Bible says to not even think about having sex outside of marriage. When these thoughts come into your head, pray immediately or prayerfully repeat a Scripture verse. Then find a healthy, fun way to release that energy.
"The night is nearly over; the day is almost here. So let us put aside the deeds of darkness and put on the armor of light. Let us behave decently, as in the daytime, not in orgies and drunkenness, not in sexual immorality and debauchery, not in dissension and jealousy. Rather, clothe yourselves with the Lord Jesus Christ, and do not think about how to gratify the desires of the sinful nature" (Romans 13:12-14).