Beyond Infidelity

The first book that helps people transform the experience of infidelity into a catalyst for unparalleled personal growth—from the popular online therapist who has helped thousands do the same.

Cheating is a topic therapist Lauren LaRusso knows all too well, as both a professional who helps clients grappling with the realization of a partner’s affair AND as a wife whose own marriage ended due to infidelity. Desperate for answers, LaRusso set to work learning every last thing she could about rebuilding her life and helping others do the same. Shocked by cheating’s prevalence, she wondered: if millions of people are having affairs, why aren’t we openly speaking about it? Why is the topic still so taboo? And most importantly: why isn’t anyone talking honestly about how the partners left behind can rebuild their lives and reclaim themselves in the wake of it?

Most books on infidelity either focus on reconciliation OR they normalize cheating as a mere “warning sign” in a relationship. But the truth is, infidelity is cited as a reason for 60 percent of all divorces. And while that is a scary statistic, LaRusso is here to assure you that you can still find hope and even happiness on the other side of infidelity. In fact, great beauty and personal transformation awaits...if you know how to find it.

In Beyond Infidelity, LaRusso writes the book she wishes had existed when she was suffering in silence. With an interactive seven-step guide—taking readers from understanding what you’re going through, to stabilizing yourself and curating your world, to breaking free and becoming whole—Beyond Infidelity meets readers where they are in their moment of crisis. With writing that is strikingly intimate, compassionate, and free of judgment, LaRusso's work flips the script on infidelity. Being cheated on, she explains, is not your fault. Even if your marriage ends, this moment can actually be an opportunity for lasting self-growth and healing. (Really!) This, LaRusso argues, is the true gift of infidelity—moving beyond betrayal and rising from the ashes of your relationship stronger than ever.“Beyond Infidelity is the book I wish I’d owned as I lived through my own infidelity trauma and recovery. Written with empathy, honesty, and the hard-won wisdom of her own life experience, Lauren LaRusso’s book will be an invaluable guide for anyone in shock following the discovery of betrayal. Readers who open this book feeling lost and overwhelmed will find their way to healing and a new life.” —Julie Metz, New York Times bestselling author of Perfection

“If your world has been shattered by infidelity, read this book NOW! Having been there herself, Lauren gets it on a personal level, but as a therapist she’s seen what helps people climb out of the hole and build a new life they are proud of. Lauren is a writer after my own heart and mind—I’m such a massive fan of this book and can’t recommend it highly enough!” —Dr. Lucy Hone, author of Resilient Grieving: How to Find Your Way Through a Devastating Loss

“Lauren LaRusso has written a rare and necessary book—one that meets the shattered heart with both empathy and wisdom. In Beyond Infidelity, she offers validation for the pain of betrayal while illuminating the possibility of growth, renewal, and wholeness on the other side. This book is both a map and a companion for one of life’s hardest journeys.” —Jessica Fern, author of Polysecure

“Part memoir, part clinical guide, Beyond Infidelity offers clear steps and prompts for navigating the devastating aftershocks of an affair. While centered on surviving infidelity, LaRusso's straight talk and steady hope make this a powerful guide for any betrayal--helping you navigate the darkness and find your way back to yourself.” —Lindsey Dortch Brock, LCSW, author of After the Breakup: A Self Love Journal

“Discovering a cheating partner can be an enormously painful and reality-shattering experience. In Beyond Infidelity, Lauren LaRusso gently leads readers through the process of healing from an affair. Using personal stories and awareness-building questions, this book offers readers information, validation, and skills to grow through the experience.” —Dr. Cortney S. Warren, Ph.D., A.B.P.P. Board Certified Clinical Psychologist, author of Letting Go of Your Ex

“Psychotherapist and relationship coach LaRusso, who is popular online, is an expert in the work of rebuilding oneself after infidelity, whether one is the victim or the perpetrator of betrayal…Her personal approach is driven home by the book’s consistent use of the second person (“you will feel this…”; “you will need to do this…”), adding to its intimacy. Her simple aphorisms—change is neither bad nor good, just a matter of difference; wisdom equals emotion plus logic—carry within them kernels of practical truth…Practical words for moving forward after experiencing infidelity.” —Library Journal
Lauren LaRusso is a psychotherapist in private practice specializing in extramarital affairs. She holds a bachelor’s degree in psychology and creative writing from The College of the Holy Cross, and she received her master’s degree in professional counseling from The University of Pennsylvania in Philadelphia, PA. Lauren is licensed in Pennsylvania, Connecticut, and New York, and she also works with clients on a consulting basis around the world.Chapter 1

Understanding What
You're Going Through

All endings are also beginnings; we just
don't know it at the time.

-Mitch Albom

Lindsay sat curled up on my couch, her face gaunt and exhausted, her body folded in on itself. Her legs were tucked underneath her and her arms were wrapped tightly around her stomach, as if trying to hold herself together. She explained what had been happening lately.

"Every night at dinner, as soon as I sit down with my husband and daughter, I end up running to the bathroom. Just looking at the food makes me sick . . . And the moment I realize we're all sitting at the table together, I start crying. I don't want to, but I can't stop. So I have to get up and leave. And then I'm hit with a horrible stomachache."

Just two weeks earlier, Lindsay had discovered that her husband, Franco, had been having an affair for the past year-with a local mom she once considered a good friend. The betrayal was twofold, and it cut deep. Since then, dinnertime, which was once her favorite part of the day with her family, had become a minefield of pain. Most nights, Lindsay ended up on the bathroom floor, sobbing silently while their toddler called out from her highchair, "Where'd Mama go?"

With tears pooling again in her eyes and a mounting pile of used tissues at her side, Lindsay looked at me and asked, "Is this really happening? What do I even do now?"

Her heartbreak was raw-and familiar. I had been in that very place myself, once the client sitting on my therapist's couch twice a week, wrecked by disbelief and unable to make sense of what was happening. Now, years later, as I sat across from Lindsay, I gently offered the truth I had needed to hear back then: "There is nothing wrong with you. Your reaction isn't too much. It's entirely appropriate for what happened to you."

Of course she couldn't sit at the dinner table without breaking down. That moment-family dinner-once filled with love, laughter, and connection, had become an excruciating reminder of what was lost. It made sense that something so ordinary now felt unbearable. In the wake of betrayal, it's often the simplest routines that flood us with grief. And here's what else is profoundly true: Having an outsized reaction to outsized circumstances, having an over-the-top response to an over-the-top situation-that's normal.

As Lindsay and I continued working together, she slowly began to shift from confusion, shame, and self-blame into greater awareness and understanding. She was still in pain, but she now understood that her body's intense reactions weren't signs of weakness, and that she was not as "crazy" as she felt she was-these were symptoms of trauma. This simple understanding made way for more compassion and less judgment, which paved the way for her progress.

"I don't think I've ever been this aware of what's going on inside me," she said after four months of work together. She'd been learning to notice the connection between her emotional state and her body, and using simple techniques, like the ones you'll find in the following chapters, to tend to herself in real time.

When Lindsay first arrived, her constant emotional and physical dysregulation-a common and normal experience for a betrayed partner-also made communication between Franco and her nearly impossible.

"I was totally volatile," she acknowledged. "We couldn't even talk about the next day's schedule without me breaking down or verbally attacking him. Franco was at the end of his rope. And honestly, I was, too. But neither of us knew what to do."

Now, even though their future was still uncertain, things were different.

"This is the hardest thing I've ever faced. And I hope it always will be," she told me one day. "But I'm learning how to take care of myself. I can actually communicate most days without breaking down. That feels huge."

In those earliest days after betrayal, your work isn't to fix everything or rush into decisions. It's to understand what's happening to you, inside and out. Like Lindsay, you may be feeling disoriented, reactive, emotionally flooded. That doesn't mean you're broken. It means your body and heart are reacting exactly as they should to a profound and disorienting relationship trauma.

In this early phase, I want you to gently unpack what you're experiencing, so you can understand it better and help yourself through it. Together, we'll explore your symptoms, understand where they're coming from, and begin learning how you can give yourself the support you need.

The more you understand, the more grounded and empowered you'll become. This is the foundation for something deeper-the powerful transformation of post-traumatic growth. Post-traumatic growth is the transformation that becomes possible when you choose to face your pain, tend to it, and grow from it.

Let's take a deep breath and explore together what you're likely feeling in these early stages, why you're feeling it, and how to care for yourself through it. This foundational understanding and practice is how you will start spinning the threads of your suffering into a tapestry of strength.

Immediate Grief and Loss

"It would be easier if you had died!" I screamed at my husband-and I meant it. I had only recently discovered his affair, and I felt utterly trapped in my own personal hell, searching desperately for an exit that didn't exist.

That kind of statement shocks even the person saying it. But the breathtaking grief that comes from discovering infidelity by your spouse who is still very much alive creates unbearable dissonance-a dissonance that might close if your grief was from death itself instead of the waking death of betrayal. Let me be clear-this is not comparative suffering, or a competition of heartbreak with anyone who has lost a spouse. Rather, it's a bewildering and disorienting grief all its own. Your partner is still standing in front of you, but they've instantly become a stranger, the perpetrator of immeasurable pain and deception, and the very person responsible for your harm and anguish.

When someone betrays you, they haven't just lied or cheated; they've used the most sacred parts of your relationship-your time, affection, trust, and possibly your money-to destroy your life with someone else. It feels so devastating that your mind leaps to an impossible thought: Death would have been easier.

Author Glennon Doyle captures this feeling with piercing clarity in her memoir Love Warrior, where her husband, Craig Melton, confesses in therapy that he's been cheating for their entire marriage. In that instant, Glennon mentally drifts into a scene from The Princess Bride and sees the sword fight between Inigo Montoya and Westley. Inigo's startled expression when he realizes Westley is just as skilled as he becomes emblematic of her own shocking, out-of-body realization about what she's really facing with Craig. Glennon thinks, Well, he might kill me, but at least this duel is going to be interesting.

That's the kind of mental shift betrayal forces on you. One minute you're talking to the person you've built a life with. The next, you're confronting an enemy who has destroyed your reality. Glennon leaves the therapy office saying, "To me, there is no 'you' anymore. Whoever the hell you are-you've destroyed our family, and I will never forgive you."

This confronting level of grief is confusing, surreal, excruciating, partially because it's mixed with trauma, which we'll explore in depth in the next section. The infidelity strips your partner from existence cognitively, while they remain present physically, mercilessly breathing, blinking, and probably feeling even more alive because of what they did. It's a maddening loss unlike any other.

To add layers to the pain, you're not just grieving your spouse; you're grieving everything tethered to them-your sense of self in relation to them, your shared history, the life you thought you had, the future you imagined, your routines, your home, your family structure, your memories, and your traditions. Suddenly, you don't know what was real, what is real, or what will be real again.

This kind of loss is not just emotional. It's neurological. It's existential. The betrayal itself, plus the deception required to carry it out, produces a flood of compounded grief that leaves you spinning with more questions than answers. For my client Lindsay, as it does for all betrayed spouses, including me, the questions felt endless.

"For me, this is still all brand new," Lindsay said to me as she explained Franco's growing impatience with her need to know the truth. "But to him, it's not."

"He's known what was happening this whole time," I said gently. "You're just trying to play catch-up. Your life was blown apart as if by a grenade, and now you're bleeding out. Having answers feels like a balm to your wound, in a way, because if you just know what you're dealing with, you can help yourself answer the question of whether you can survive it."

In this stage, answers feel like the only thing that might fill the bottomless hole blown through your heart and your life by someone you loved who is still there but long gone.

As Theodore Roosevelt once said, "Absence and death are the same-only in death there is no suffering."

You're Not Broken. You're Grieving.

Understanding grief helps give language and structure to what often feels like pure torture. When you can name what you're feeling, even when it's excruciating, you begin to build a bridge toward understanding and self-compassion.

Decades ago, psychiatrist Elisabeth Kübler-Ross introduced the five stages of grief. Originally applied to terminal illness and death, these stages now help us understand many forms of profound loss, including betrayal. The stages of grief are denial, anger, bargaining, depression, and acceptance. More recently, grief experts have added a sixth stage: meaning-making-the process of drawing purpose or insight from your pain.

Acceptance and meaning-making generally aren't available yet at the early moments of a huge loss or shock, because those stages require activation of a different part of the brain from the one that's working for you right now in the immediate aftermath of trauma. But make no mistake, they're a huge part of your post-traumatic growth, and you will get there.

Grief is not a straight line. It's a swirling, looping, sometimes frenetic dance between all these stages, sometimes within the span of minutes. You might lash out in anger, then collapse in tears. You might deny what happened, then try to explain it away, then fall into hopelessness. This is all normal. This is grief.

Here's a brief breakdown of what you're cycling through and what it sounds like:

Denial: "This can't be happening." You may feel numb, detached, or unable to process reality.

Bargaining: "Maybe if I'd worked less, this wouldn't have happened." You may try to rewrite the past or search for explanations to undo your pain.

Anger: "How could they do this to me?" Rage toward your partner, yourself, or even the universe is common, and protective.

Depression: "What's the point of anything now?" This stage often feels like a heavy fog, a feeling of being enveloped by hopelessness, isolation, deep sorrow.

Acceptance: "This happened. I don't like it, but I will survive it." Not resignation, but an acknowledgment and nonresistance that allows you to move forward.

Meaning-Making: "Maybe this will push me to finally prioritize myself." These thoughts may be fleeting or entirely absent at first, and that's okay.

Take a moment to reflect on what you're feeling. You'll find prompts in this section to help you name your thoughts, connect them to your emotions and physical sensations, and build greater awareness of your inner experience. This attunement is the foundation for your healing. It gives you the ability to recognize and tend to your pain instead of being ruled by it.

Complete the following:

When I am in denial, it sounds like this (quote your own thoughts):



For example: "This can't be happening."

I feel like this (name your emotional and physical feelings):



For example: I feel disconnected, numb.

When I am in depression, it sounds like this:



For example: What's the point of anything? I just want to disappear."

It feels like this:



For example: A heavy blanket falling over me.

When I am in anger, it sounds like this:



For example: "How the (expletive) could they have done this to me?"

It feels like this:



For example: A surge of energy. I could scream or hit something.

When I am bargaining, it sounds like this:



For example: Maybe if I hadn't worked so much, then this wouldn't have happened.

It feels like this:



For example: A pang of heartache in my chest.

When I am in moments of acceptance, it sounds like this:



For example: This happened. I'm going to be okay.

It feels like this:



For example: A peaceful neutrality. A release.

At this early phase, any meaning-making thoughts, if they do occur at all, are likely to be accompanied by a "maybe," such as "maybe it will be for the best that I'm finally forced to prioritize myself," and they might also be linked arm in arm with anger. You're not sure yet, and you're feeling self-protective while just trying to offer yourself a brief possibility of hope. There's no rush, but if you have these thoughts and feelings, put them down, too.

If your relationship has ended, you may also be grieving the "lasts": the last holiday together, the last time you were intimate, the last vacation, the last ordinary Tuesday night together with your favorite show. Moments you didn't know at that time would be the last. That kind of retrospective loss is deeply disorienting-and can be truly heartbreaking to face. Recognize and honor the complexity of all that you feel, as you feel it. It is all okay, and it's all important. Let it be there.

There's No "Right" Way to Grieve

Terrence was a client who was particularly hard on himself for making what he called "all the betrayed spouse mistakes." After discovering his wife's affair, he lashed out constantly, directly or passive-aggressively. Every time she mentioned the kids, money, or chores, he'd erupt with a sarcastic jab about how hypocritical it was for her to care about any of that now when she hadn't cared about it while having an affair. Eventually, Terrence's wife left.

"I couldn't stop," he said, wracked with regret. "I weaponized everything. I pushed her away. If I'd handled it differently, we might have had the chance to work things out."

Terrence was caught between two powerful forces: the self-protective rage of a person who has been deeply hurt, and the bargaining of a person who wishes they could have felt or handled it differently. He thought that if he had grieved "better," he could have saved the relationship.