“But if a man thinks that he’s treating his fiancée improperly and will inevitably give in to his passion, let him marry her as he wishes. It is not a sin.” 1. Corinthians 7:36 NLT  This is because having sex outside marriage is considered to be immoral. That is why the Bible says that “because there is so much sexual immorality, each man should have his own wife, and each woman should have her own husband.” 1. Corinthians 7:2 NLT  It is “God’s will for you to be holy, so stay away from all sexual sin. Then each of you will control his own body and live in holiness and honor— not in lustful passion like the pagans who do not know God and his ways.” 1. Thessalonians 4:3-5 NLT And in Ephesians 5:3 NLT God also tells us; “Let there be no sexual immorality, impurity, or greed among you. Such sins have no place among God’s people.”