Lifelong marital exclusivity

Lifelong marital exclusivity is the expectation that spouses reserve sexual relations for one another for the duration of marriage. The book treats it not as a self-sufficient guarantee of love, but as a rule imposed on a relationship whose partners may not freely choose one another, whose desires may change, and whose social and economic circumstances are unequal.

Definition and Conditions

The rule makes fidelity a permanent obligation, binding a couple not only to their present attachment but to an unknown future. The book distinguishes such compulsory fidelity from fidelity that has meaning because it arises spontaneously: lovers may wish to remain irreplaceable to one another, but that wish depends on a living desire rather than on a rule alone.

Marriage can provide conditions in which sexual intimacy develops. When attraction is mutual, spouses may discover it gradually, and regular life together can support familiarity and satisfaction. But the same institution turns intimacy into a set of rights and duties. A spouse may feel obliged to comply rather than freely desire, making exclusivity an imposed condition instead of a mutual expression of love.

Desire, Choice, and Duration

The rule is especially difficult for a young woman asked to promise exclusive, lifelong intimacy with a man whose sexual personality she does not yet know. Her erotic life depends substantially on the particular partner, while the commitment is made in advance and under social conventions that can restrict her ability to refuse or later assert herself. An engagement may already seem definitive; after yielding to the expected relationship, she may find it difficult to reclaim independence.

Nor does choosing a marriage for love resolve the problem. Idealized attachment and youthful passion do not necessarily survive shared daily life, and even a sincere, intense attraction does not guarantee a lasting union. The book therefore rejects both the assumption that convention will produce love and the easy alternative that love itself can promise lifelong compatibility.

Desire can also fade when hostility, disgust, or indifference displaces the wish to approach the other person. Even esteem and friendship do not necessarily preserve erotic attraction. When spouses cease to encounter one another as distinct people, sexual relations may lose their reciprocal meaning. In this account, a permanent exclusivity rule cannot make desire permanent: it may persist after the intimate exchange that once gave it meaning has disappeared.

Reciprocity and Gendered Power

The demand for lifelong fidelity is not experienced on equal terms when marriage itself gives one spouse greater authority or security. The book describes women’s broader social position as one in which formal rights can coexist with economic dependence and customary subordination. Historically, Roman marriage with manus placed a wife and her property under her husband’s power; later French law likewise imposed a duty of obedience on wives and treated their adultery more harshly than men’s. These examples place marital expectations within systems that have not simply regulated two equal partners.

The standard can also be applied asymmetrically in intimate life. The account of marital jealousy describes a wife guarding her husband’s sexual fidelity as though it were a resource allotted to her, while the husband may treat her body as available to satisfy his own desire without consulting her. The example exposes how the language of mutual exclusivity can conceal unequal claims over partners and sexual agency.

Institution and Alternatives

The book’s criticism is directed not at couples as individuals, but at marriage as an institution that requires people who may not have freely chosen one another to meet each other’s needs in every respect, at once, for an entire lifetime. Such an arrangement, it argues, encourages hypocrisy, hostility, and unhappiness. Lifelong exclusivity is part of this larger demand: a rule cannot create reciprocal freedom or sustain desire simply by declaring the relationship permanent.

The book contrasts compulsory permanence with relationships grounded in the recognition of two freedoms. Some couples, within marriage or outside it, combine love or friendship with independent occupations and friendships rather than making each partner the other’s exclusive reason for living. This alternative does not prescribe a single arrangement; it locates the ethical distinction in whether fidelity and intimacy remain freely chosen, rather than being enforced as duties irrespective of desire, equality, or change.