Marriage is a covenant relationship before God and must be protected.
Adultery is not only physical but can be mental as well. Matthew 5:28 says, "But I say to you that whoever looks at a woman to lust for her has already committed adultery with her in his heart."If something cannot be righteously fulfilled, you should not be thinking about it. What you allow in your heart will eventually be done with your hands.Proverbs 4:23 says, "Above all else, guard your heart, for everything you do flows from it."
You must fight for and protect your marriage.