No marriage fails except it fails first in the bedroom. Husbands are usually angry when denied of sex while sex-starved wives tend to nag. Seek to improve your marriage sexually.
“The wife hath not power of her own, but the husband: and likewise also the husband hath not power of his own body, but the wife. Defraud ye not one the other, except (it be) with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your incontinency.” – 1Corinthians 7: 4-5