Marriages often deteriorate because wives have hangups about sex. Given the fact that such hangups are a historical holdover from ancient pagan Greek society, one would think that Orthodox Chrisitans would have a better handle on the problem.
Unfortunately, it is a taboo subject because it is not "nice" to expose the problems people have with sexuality. Paradoxically, sexual repression is very common today, despite the bombardment of sexual images in our society.
So women usually answer with talking to a priest about it. Of course, males have a protective instinct when it comes to a female in distress, and so tend to come to the protection of a distressed female. In the end, the female who is repressed controls the situation. Such is unacceptable.
When a man commits to a woman in marriage, he is promising to live in chastity -- that is, preserve himself for her sexually, not participate in any extra-martial sexual/intimate activity, no pornography or other such sinful activities. He also commits to providing financial resources and being a father to the children who are brought into the world through the union. In return, he expects that his need for sexual intimacy will be met by his wife. She has a responsibility to him to be subject to him in the area of sexuality.
The dirty little secret is this: Women in Western societies, once the man has a ring on his finger, don't typically respect the agreement. Thus, the husband suffers as a result of the wife's repression and hangups.
Previous comments have made a great point: a priest has no business micromanaging such matters. In reality, the sexual responsibility of the wife to the husband should be communicated to women prior to the marriage and they need to accept the fact that in putting that crown on their head, they agree to meet the need of their husband.
It is the place of forums such as this forum to communicate such issues since the issues aren't adequately covered in catechesis, pre-marital counseling, books, or other. These issues are ones that are to be communicated through the living tradition, passed down from parents to children, and spoken about in private.
Paul teaches in the Epistle to Titus "Older women likewise are to be reverent in their behavior, not malicious gossips nor enslaved to much wine, teaching what is good, so that they may encourage the young women to love their husbands, to love their children, to be sensible, pure, workers at home, kind, being subject to their own husbands, so that the word of God will not be dishonored."
In the West, no such culture exists because Orthodoxy is in large-part a convert Church. The older women who have experienced how to successfully meet the needs of their husbands usually do not teach the wives what it means to fulfill their responsibilities and be subject to their husbands. Therefore, the only alternative is for these issues to be discussed out in the open. Suggesting that such will happen by asking a priest is a cop-out.