. Avoid all forms of infidelity. Jesus Christ said: “Everyone that keeps on looking at a woman so as to have a passion for her has already committed adultery with her in his heart.” (Matthew 5:28) When a person engages in sexual intercourse outside of marriage, he or she delivers a devastating blow to the union, one that the Bible says is grounds for divorce. (Matthew 5:32) However, Jesus’ words quoted above show that a wrong desire can exist in the heart long before a person actually engages in the physical act of adultery. Entertaining that wrong desire is in itself a form of betrayal.