Men give varied reasons why they cheat: Some say it is because the wife has been disrespectful, not submissive, boring, rigid or nagging. But cheating is a choice. A man who is looking for respect, will respect his marriage. He will not do something dishonorable just because something is missing in his marriage. Whatever is missing in his marriage as head of the family, he adds it to his home. You can inspire your spouse to treat you right, especially if you do it before things get out of hand.
Unfaithfulness is not part of the fruit of the Holy Spirit, faithfulness is. Cheating is a willing decision and there is no justification for it. It stems out of selfishness and lack of vision.