In principle, if the man is sincere and the woman is faithful, then that is the perfect combination for a spiritual relationship. The wife helps her husband get past the youthful years of lust, by satisfying his material needs within the realm of Vedic instruction. In the end, she shares equally in his spiritual realization, whether she personally took part in the spiritual practices or not. If she faithfully and intimately serves her husband, then she gets the same benefit, providing she wants it. If they are not in agreement with each other as to the goal of their lives, then they are not really married-at least not in the Vedic sense. If two people want to go anywhere together, first they have to agree on where they want to go.