Infidelity in intimate relationships

Infidelity in intimate relationships appears in Sugar’s advice not as a single, self-explanatory offense, but as a challenge shaped by agreements, disclosure, and the conditions of a particular relationship. Her responses pair a firm standard of honesty with a refusal to treat every breach or near-breach as identical: partners need information to make informed choices, while confession is not automatically the most responsible response in every case.

Disclosure and the ethical baseline

Sugar gives a categorical answer to a letter writer who is regularly sleeping with multiple men: each man has a right to know that the relationship is nonexclusive. She frames disclosure as a condition for emotionally healthy decision-making, not a courtesy that can be withheld when the situation feels inconvenient. Her proposed approach is direct but deliberately unceremonious: the writer can simply tell each partner that she is also seeing other people, without turning the disclosure into an elaborate, emotionally loaded conversation. The underlying rule is that people should not be left to make intimate decisions without knowing whether their partners are also involved with others.

That baseline does not make Sugar an advocate of confession without regard to its consequences. In responding to a married woman whose online flirtation had become excessive, she advises against telling the woman’s husband. The writer had ended contact, did not describe a sexual affair, and said she had no wish to leave her marriage. Sugar contrasts that bounded incident with circumstances that would change her advice: sex with the other man, a recurring pattern of emotional affairs, diminished love for the husband, continuing deceitful contact, an inward sense that disclosure was necessary, or the belief that concealment would do greater damage than telling the truth. In this case, she locates the lasting value of the episode in what the woman learned about herself and her marriage, rather than in a confession for its own sake.

The limits of a deal-killer rule

A letter from an engaged woman tests Sugar’s distinction between honesty and automatic confession against a different problem: the writer had learned that her older half-sister and brother-in-law, whom she regarded as a model couple, had both been unfaithful. His affair lasted several months; her sister had a brief fling that she chose not to disclose, believing she had learned from it and did not want to injure the marriage. The couple eventually repaired the breaches. They had also raised two children, traveled, and built a shared life, so the revelation altered the writer’s picture of them without making their happiness a facade. She nevertheless questioned whether they should walk her down the aisle, since she and her fiancé had agreed that infidelity would end their marriage automatically, without discussion.

Sugar treats that absolute rule as an understandable attempt to secure control, but not as a guarantee of a healthy marriage. Long relationships, she argues, can include many degrees of infidelity and near-infidelity, arising from circumstances such as loneliness, boredom, alcohol, desire, or a need for attention. Naming those possibilities does not excuse betrayal or imply that every couple will face it; it challenges the assumption that people can protect themselves from complexity by deciding in advance to leave without conversation. The sister and brother-in-law’s lasting partnership matters precisely because it includes difficult periods as well as affection and friendship. Sugar therefore sees them as fitting wedding attendants: their history offers a more complicated model of enduring love than an ideal of spotless conduct.

Betrayal, accountability, and repair

Sugar’s own marriage gives her discussion of infidelity a personal, less theoretical dimension. When Mr. Sugar disclosed that he had been unfaithful with a woman who had sent him a postcard, Sugar experienced the revelation as a rupture in trust and in the image she had held of their relationship. Their early years together had been associated with long stretches of reading side by side on two hand-me-down couches; after learning what had happened, she felt that the shared innocence attached to those memories had been damaged. When Mr. Sugar returned home, they confronted the breach directly. Sugar was furious and did not assume that love required her to accept what he had done.

The confrontation nevertheless allowed for conflicting judgments rather than a simple division between a wholly guilty partner and a wholly innocent one. As Mr. Sugar explained himself, Sugar moved between anger and sympathy. She understood that his account of the circumstances did not erase the hurt, while also recognizing her own past failings and capacity for similar mistakes. She believed his remorse was sincere. From that experience, she suggests that even couples admired for their lasting love may pass through periods of serious difficulty; a durable partnership is not necessarily one untouched by betrayal. Her advice to the engaged letter writer therefore treats a couple’s history as more than a record of whether either partner has ever crossed a line: the sister and brother-in-law’s years of friendship and shared life coexist with their breaches and efforts to repair them.

A separate letter about friendship shows how a broken promise can remain unsettled even when the people involved appear to move on. The writer had told a friend she would not sleep with a man connected to that friend, then did so after her desire outweighed her concern about the likely hurt. The friend and the man seemed to have made up, but the writer’s own friendship with her remained uncertain. A recent heart attack suffered by the writer’s stepfather sharpened her sense of what mattered, without removing her unease about the consequences of her choice.

That unease was tied to an earlier breach: six years before, the writer had cheated on another friend, apologized repeatedly, and eventually resumed the friendship. She had assumed they were reconciled until the former friend said that the old injury still shaped her trust and what she chose to share. Sugar’s treatment of infidelity thus leaves room for repair without equating forgiveness with the erasure of consequences. Reconciliation can restore a relationship, yet the remembered breach may continue to influence its terms.

Desire, communication, and the limits of assumption

Sugar’s advice also distinguishes private fantasy from the choices people make in relationships. A woman who felt ashamed of fantasies involving submission and taboo scenarios connected them to her feminist convictions and to sexual abuse by her father when she was young. Sugar rejected the idea that such fantasies made her sick or contradicted her identity, while urging her to work with a psychotherapist on the loss, violation, and continuing feelings bound up with her father. The distinction matters to Sugar’s broader account of intimacy: a person’s thoughts do not by themselves define what she endorses or how she treats a partner, and shame is not a substitute for understanding desire.

A misunderstanding between Sugar and Mr. Sugar makes the practical stakes of unspoken assumptions more concrete. Early in their relationship, a comment about sex, control, and submission led him to believe that she wanted to be spanked; he acted on that interpretation for a month, although neither of them actually wanted the role each had taken on. When they traced the misunderstanding back to its source, Sugar told him plainly that spanking did nothing for her. The episode is not presented as infidelity, but it sharpens the same concern with intimate knowledge: partners can misread one another even in good faith, and an assumption about desire is no replacement for communicating what each person actually wants.