After Betrayal: How Couples Can Heal from Infidelity and Rebuild Trust

By Mark Ryan, BACP Accredited Psychotherapist and NCPS Accredited Relationship Therapist

When infidelity comes to light, it tends to arrive like a rupture in the floor of everything you thought you knew. One moment you had a relationship with certain assumptions baked into it. The next, those assumptions are gone, and you are standing in the wreckage of something you thought was solid.

It is one of the most painful things a person can experience. And yet, many couples come through it. Not just intact, but changed in ways they could not have anticipated, sometimes closer, more honest, and more deliberately connected than they were before the affair.

This article is for anyone who is in that impossible place right now, or who suspects they might be heading there. It is an honest look at what affairs and betrayals do to a relationship, what recovery involves, and how couples therapy can make the difference between surviving and genuinely healing.

How common is infidelity, really?

Infidelity is more common than most people assume, though the precise figures are contested and often overstated online. When researchers look at rigorous national surveys, the often-repeated claim that half of all marriages experience infidelity does not hold up. The more reliable estimate is that around 20 to 25 per cent of married couples experience physical infidelity at some point, with some older studies finding rates up to around 40 per cent. When emotional affairs and other forms of betrayal are included, the figures rise further.

These numbers are not cited to normalise betrayal, but to say something simple: if this has happened to you, you are not alone, and you are not uniquely failed. Infidelity happens in happy relationships and unhappy ones, in long marriages and new partnerships, and across every gender, sexuality, and relationship structure. The shape of it varies, but the experience of a broken agreement is shared widely.

What it always does, regardless of context, is shatter a sense of safety. The betrayed partner does not just lose trust in what happened. They often lose trust in their own perception of reality: what else did I miss? What else wasn't real? That is part of what makes recovery so difficult, and so important to approach carefully.

What betrayal does to a relationship

The immediate aftermath of discovering an affair is often described as traumatic, and that word is clinically appropriate. Research consistently identifies symptoms that mirror post-traumatic stress: intrusive thoughts, hypervigilance, emotional numbness, difficulty sleeping, and sudden floods of intense feeling.

The relationship itself undergoes a kind of identity crisis. Everything that was taken for granted, the shared future, the agreed understanding of who you are to each other, has to be renegotiated. Many couples describe a period of profound disorientation where neither person knows what they are, whether they are trying to stay together or separate, or whether either option feels survivable.

This is not a sign that the relationship is unsalvageable. It is often the necessary chaos that precedes a more honest reckoning with what the relationship truly is, and what both people want it to become.

The disclosure question: why honesty changes the odds

One of the most striking findings in the research on affairs is about disclosure, and it runs counter to what many people instinctively want to do.

A five-year study of couples in therapy by Marin, Christensen and Atkins, published by the American Psychological Association, followed a small group of infidelity couples drawn from a larger trial and tracked what happened to them over time. The divorce rates told a clear story. Where the affair was kept secret, around 80 per cent of those couples divorced within five years. Where it was disclosed and worked through, the figure was around 43 per cent. For couples with no infidelity at all, the baseline divorce rate over the same period was around 23 per cent.

It is worth being honest about the size of this study: it tracked 19 infidelity couples, a small sample, so the percentages are indicative rather than definitive. But the direction of the finding is consistent with what therapists see in the room. Secrecy corrodes. The affair that stays hidden keeps doing damage long after it ends, because the betrayed partner is living inside a reality that is not true, and some part of them often senses it. Disclosure is agonising, but it gives the relationship something honest to work with.

This does not mean disclosure should be handled carelessly, or that every detail must be shared at once. How and when an affair is disclosed matters enormously, and it is one of the things a skilled therapist can help a couple navigate, balancing honesty with appropriate boundaries about detail.

The impact on sex and desire

One of the most complicated and least-discussed consequences of infidelity is what it does to physical intimacy. This is territory that couples often find hardest to address, and that therapy can help navigate.

For many betrayed partners, the idea of physical intimacy after an affair becomes laden with unwanted images, comparisons, and questions. The body that was once familiar and safe can suddenly feel contaminated by association. Some people find they are unable to be close physically without intrusive thoughts flooding in. Others find they desperately want physical connection as a form of reassurance, while simultaneously feeling unable to trust it.

The person who had the affair often faces their own version of this complexity. Guilt, shame, and a heightened awareness of the hurt they have caused can make it difficult to initiate or respond to physical contact. Some people throw themselves into reassuring their partner physically, while others shut down entirely.

A 2024 pilot randomised controlled trial by Irvine and colleagues, published in The Family Journal, compared Gottman Method Couples Therapy with treatment-as-usual approaches for couples in affair recovery. Of the forty-nine couples who took part, nineteen completed all assessments, so this is early-stage evidence rather than a large trial. Within those limits, the Gottman approach was more effective across trust, conflict management, relationship satisfaction, and specifically the quality of the couple's sex. That last finding matters: it suggests erotic recovery after an affair is not something couples must manage alone. It is something therapy can directly support.

The path back to physical intimacy after betrayal is rarely linear. There may be periods of closeness followed by sudden withdrawal, moments where connection feels genuinely possible followed by a triggering conversation or memory that resets the clock. This is normal. It does not mean healing is not happening. Where the affair has become entangled with patterns of compulsive sexual behaviour or pornography use, there is more to untangle, and my article on porn addiction and relationships looks at that specifically.

What tends to help is creating deliberate space for both partners to be honest about what they need physically and emotionally, without pressure and without performance. Learning to talk about sex directly, which most couples have never really done, is often part of the work, and my article on how to talk to your partner about sex covers how to begin. A good therapist can hold these conversations when they feel too charged to have alone.

For many betrayed partners, the idea of physical intimacy after an affair becomes laden with unwanted images, comparisons, and questions.

Can a relationship recover from infidelity?

The honest answer is that it depends, and it depends significantly on how the couple approaches recovery.

The research gives genuine cause for hope. In the same five-year study, couples who remained together after infidelity reported increasing relationship satisfaction over time. By the end of the study they were statistically indistinguishable from couples who had never experienced infidelity. The affair, when addressed properly, did not define the long-term quality of the relationship. More broadly, across the research, somewhere between 60 and 75 per cent of couples who seek therapy after an affair stay together.

What does not tend to work is attempting to move on without genuinely addressing what happened. Sweeping the affair under the carpet, demanding the betrayed partner simply get over it, or rushing back to normality before the emotional work has been done, tends to produce a relationship that is structurally intact but inwardly hollowed out. The surface looks fine. Underneath, nothing has healed.

Recovery requires both partners to be willing to stay in the discomfort long enough for something real to happen. That is genuinely hard work. But it is work that therapy is specifically designed to support.

How couples therapy helps

Couples therapy after infidelity is not about adjudicating who was wrong or forcing a particular outcome. It is about creating a structured, safe space where both partners can speak honestly and be heard, where the underlying dynamics that contributed to the affair can be explored without blame, and where both people can make a clear-eyed decision about what they want and how to get there.

Emotionally Focused Therapy is one of the most evidence-based approaches for this work. It focuses on the attachment bonds between partners and the emotional cycles that drive their behaviour. In the context of infidelity, it helps couples understand the fear, disconnection, or unmet need that may have contributed to the affair, without using that understanding as an excuse, while also addressing the very real trauma experienced by the betrayed partner.

The Gottman approach to affair recovery is another structured method, built around three phases often summarised as atone, attune, and attach. The first phase focuses on the person who had the affair taking full responsibility and demonstrating genuine remorse. The second builds emotional understanding between partners. The third works toward rebuilding physical and emotional closeness.

Therapy also provides something that self-help cannot: a trained professional who can notice what is happening between the two of you in real time, who can interrupt destructive cycles before they do further damage, and who can hold both partners' experiences at once without taking sides.

For LGBTQ+ and non-monogamous relationships

Infidelity looks different in different relationship structures. For LGBTQ+ couples, the specific dynamics of minority stress, internalised shame, or the particular challenge of navigating identity within a relationship can shape both the context of an affair and the experience of recovery.

For ethically non-monogamous or polyamorous couples, infidelity is not simply about sex outside the relationship. It is about a breach of the specific agreements that define the relationship, whatever those agreements are. That breach can be just as devastating as in a monogamous partnership, and it deserves to be treated with the same seriousness. A partner who breaks an agreed boundary in an open relationship has betrayed something real, even if the same act would be unremarkable in a different relationship.

If you are in a relationship structure that falls outside the conventional, finding a therapist who understands your context without pathologising it matters. Recovery should be oriented toward what your relationship actually is, not toward a monogamous ideal that may never have applied to you.

When the answer is to part

Not every couple will choose to stay together after an affair. Some will decide, through honest reflection and therapy, that the relationship has run its course, and that the most dignified thing is to end it well. That is a valid outcome, and a good therapist supports both possibilities without pushing either.

Sometimes the affair is the thing that finally surfaces a truth one or both partners have been avoiding for a long time. Ending a relationship with clarity and care, rather than in the heat of the discovery, is itself a kind of repair, even when reconciliation is not where it leads. There is a real difference between a relationship that ends in further wounding and one that ends with both people able to understand what happened and carry less of it forward.

The beginning of something different

For those who want to try, who feel that what they have is worth fighting for, or who simply are not ready to give up, recovery from infidelity is genuinely possible. Not recovery to exactly what was, which is rarely what anyone wants, but recovery to something more honest, more deliberate, and in many cases more intimate than what existed before.

The affair is not the story. What the couple does next is.

If you are in the middle of this right now, and it feels impossible, that feeling is understandable. It is also not the whole truth. Many couples have been exactly where you are and come through it. You do not have to figure out how to do that alone.

If you would like to talk it through, you can book a free 30-minute consultation. The conversation is in person at one of my central London rooms, or online by video, and there is no obligation to continue.

About the author

Mark Ryan is a BACP Accredited Psychotherapist and NCPS Accredited Relationship Therapist specialising in couples and relationship therapy across London. He works with couples navigating affairs and betrayals, trust repair, desire and intimacy challenges, and diverse relationship structures including LGBTQ+ partnerships and ethically non-monogamous relationships. His practice is sex-positive and kink-aware, offering a genuinely non-judgemental space for all couples. Mark works from private therapy rooms in Kensington, Pimlico, and Angel, Islington.

He is an Accredited Member of the British Association for Counselling and Psychotherapy, MBACP (Accred), 01014494, and an Accredited Relationship Therapist with the National Counselling and Psychotherapy Society, NCPS495.

References

•Marin, R. A., Christensen, A., & Atkins, D. C. (2014). Infidelity and behavioral couple therapy: Relationship outcomes over 5 years following therapy. Couple and Family Psychology: Research and Practice, 3(1), 1-12. https://www.apa.org/pubs/journals/features/cfp-0000012.pdf

•Irvine, T. J., Peluso, P. R., Benson, K., Cole, C., Cole, D., Gottman, J. M., & Schwartz Gottman, J. (2024). A pilot study examining the effectiveness of Gottman Method Couples Therapy over treatment-as-usual approaches for treating couples dealing with infidelity. The Family Journal, 32(1), 81-94. https://journals.sagepub.com/doi/10.1177/10664807231210123

•Fincham, F. D., & May, R. W. (2017). Infidelity in romantic relationships. Current Opinion in Psychology, 13, 70-74. https://doi.org/10.1016/j.copsyc.2016.03.008