Infidelity: Rebuilding Trust

What we call infidelity (and why it varies)

Infidelity is probably one of the subjects that brings the most distress into my practice — and also one of the most misunderstood. Because before we even talk about betrayal, we have to agree on the words. In session, I often begin with this very simple question : “for the two of you, what counts as infidelity?” And the answers almost always differ. For some, it’s a sexual encounter. For others, a kiss, an ambiguous like, a prolonged tender conversation, an emotion shared in secret, or hours spent on a dating app.

There is no universal definition of infidelity. What constitutes it is, above all, the breaking of an agreement, explicit or implicit, made between two people. Yet that agreement is rarely spelled out clearly : we assume the other person knows, that they “should know,” without ever having mapped out the boundaries of exclusivity. That is the whole point of communication in the couple : naming what, for you, belongs to the sacred and the intimate, rather than leaving it to be guessed. Estelle Becquet, in the episode #65 “infidelity·ies in the couple”, shows precisely how shifting these boundaries are, and how specific to each story.

My role is never to judge or to point to someone guilty. It is to help understand what was at play, on both sides, so that each person can decide, in full awareness, what comes next.

Why people cheat: the mechanisms, not the excuse

“Why do people cheat when they love?” I hear this question almost every time. And the answer almost never has to do with a lack of love. Understanding the mechanisms of infidelity is not excusing it : it’s giving yourself a chance to move past the shock and rebuild meaning.

What we’re really looking for elsewhere

Very often, what we go looking for in another relationship is not another person, but another version of ourselves. To feel desired again, alive, seen ; to escape a routine, a crushing mental load, a feeling of loneliness within the couple itself. Infidelity is sometimes the trace of a desire that faded without anyone daring to talk about it — a theme I explore in depth in sexual desire. In the episode #208 “why people cheat”, with my guest Lucie, we untangle these intimate drivers : boredom, the need for transgression, fleeing a conflict that was never resolved, or simply the opportunity seized in a moment of fragility.

Several infidelities, several stories

There isn’t one infidelity, but many infidelities. A one-night stand has nothing to do with a double life sustained over years, nor with a romantic attachment born almost in spite of oneself. Each one tells a different story and calls for different support. That is why I am as wary of grand ready-made explanations as I am of moral verdicts : they prevent us from understanding what, in this particular relationship, made the betrayal possible.

The shockwave: the trauma of discovery

Discovering infidelity often triggers a genuine psychic shockwave. Many people describe a state close to trauma : the ground gives way, all bearings collapse, the past itself seems to rewrite itself — “was any of it even real?” Broken sleep, intrusive images, hypervigilance, a compulsive urge to know everything : these reactions are not a weakness, they are the normal symptoms of an attachment wound.

For the person who has been cheated on, the pain isn’t only about the act : it’s about the lie, about pulverized trust, about the feeling of having been robbed of their own reality. That is why I always remind people that we must, first, make room for this distress before trying to understand or decide anything. You cannot rebuild on a wound you haven’t let breathe. The recurring question — “should we confess everything, know everything?” — has no single answer : what’s at stake is not the detail of the facts, but the possibility of restoring a shared truth and a climate of emotional consent between the two people.

Can you rebuild after infidelity?

Yes. Overcoming a betrayal and rebuilding after infidelity is possible — and many couples even come out of it more lucid, more connected than before. But it can’t be decreed : it has to be lived through, in stages, and rarely in a straight line.

1. Stabilize the emergency

The first step is not to understand everything, but to calm the storm. Put words to the state of shock, restore a minimum of safety, decide together to take time before any irreversible decision.

2. Make sense of it, without looking for someone to blame

Next comes the work of understanding : what, in the relationship, may have come loose? This never erases responsibility for the act, but it allows both people to stop going in circles. Rebuilding the couple after infidelity requires each person to look at their own part, without making the cheated-on partner “guilty” of the betrayal.

3. Restore trust and desire

Trust doesn’t return by decree : it is rebuilt through repeated actions, transparency and a great deal of patience. The body, too, needs to find safe ground again. Relearning how to touch each other without pressure, to slow down, to rediscover one another : that is the whole meaning of slow sex, which places listening and safety back at the heart of intimacy. Here again, it’s the quality of the dialogue that makes the difference between a couple that ruminates and a couple that repairs.

When the couple chooses to separate

Rebuilding together is not the only worthy outcome — and it is not a failure. Sometimes, infidelity reveals that the bond was already exhausted, or that it is no longer possible to rebuild enough safety. Choosing to separate, consciously and with as little violence as possible, is also a form of care : for yourself, for the other, sometimes for the children.

In those moments, my support consists less of “saving the couple at all costs” than of helping each person make a choice that is true to them, without locking themselves into resentment. A separation lived through with lucidity leaves infinitely fewer scars than a relationship kept alive in bitterness. The challenge, here too, is to leave the register of judgment for that of truth : what is still alive between us, and what is no longer?

The bridge toward chosen non-exclusivity

Reflecting on infidelity almost inevitably leads to another, broader question : what if exclusivity weren’t a given? This is where an essential distinction appears, one I want to state clearly : consensual non-exclusivity is not infidelity. Cheating means breaking an agreement in secret. Non-exclusivity, polyamory or open relationships rest, on the contrary, on the explicit, on transparency and on the informed consent of everyone involved.

For some couples, going through infidelity becomes an opportunity to question a model they had never really chosen, only inherited. That doesn’t mean opening up is “the solution” — it isn’t one if it serves to patch over a wound or to avoid a difficult conversation. But explored for its own sake, with lucidity, it can become a fulfilling path. Marion Joannin, in the episode #78 on sexual and·or emotional non-exclusivity, and Jessica Fern, in the episode #117 on poly-wise relationships, show how much these models demand even more communication, care and clarity than exclusivity, not less. Jordy, in episode #145, shares his own experience of non-exclusive relationships lived day to day, far from the clichés.

Whether one chooses to rebuild, to separate or to invent another framework, the essential thing remains the same : to step out of secrecy, to recover a truthful voice, and to rebuild agreements that you have genuinely chosen together.

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