Question: where in the bible does it talk about infidelity?
Answer: Proverbs 6:32 But the man who commits adultery is an utter fool, for he destroys himself. Hebrews 13:4 Give honor to marriage, and remain faithful to one another in marriage. God will surely judge people who are immoral and those who commit adultery. Exodus 20:14 “You must not commit adultery.”