How to Prevent Cheating and Strengthen Your Relationship...

How to Prevent Cheating and Strengthen Your Relationship

Okay. I want to sit with you in this question for a moment, because I think what you’re really asking is: “How do I keep us safe? How do I keep from losing this?”

And that’s a beautiful, human thing to want.

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Here’s what I know from sixteen years of sitting with couples after the bomb has gone off: most affairs don’t happen because someone is a terrible person or because the relationship was doomed. They happen because of disconnection. Because someone felt unseen, unwanted, or like they were performing a partnership rather than actually living inside one.

The real protection against that kind of drift isn’t surveillance or rules or trying to affair-proof your partner. It’s repair. Consistent, real, unglamorous repair.

In my work, I talk about what I call Proof of Work of Love. The idea is simple but demanding: the value in a relationship isn’t built by avoiding hard moments. It’s built by showing up through them. Every time you have a rupture, a fight, a disconnection, and you both choose to turn toward each other instead of away, you’re laying down another brick of trust. That accumulates. That becomes something a person doesn’t want to leave.

A relationship where repair never happens, where apologies are just empty “sorry, sorry, move on” moments without any real emotional meeting, that’s a relationship running on fumes. It looks fine from the outside. But inside, one or both people feel alone. And loneliness inside a relationship is one of the most dangerous conditions I know.

So here’s what actually works: Stay curious about each other. When your partner seems distant or irritated, instead of getting defensive, try “You seem frustrated. What’s happening for you?” Keep talking about the stuff that matters, not just logistics. Make space for desire and playfulness, not just duty and chores.

And when things get messy, which they will, don’t run or shut down. Stay. Work it out. Show your partner that they matter enough to you to sweat through the hard conversations.

You can’t prevent cheating by controlling someone. But you can build a relationship so genuinely connected, so consistently nourishing, that there’s no emotional vacancy for someone else to fill. The canoe flips sometimes. That’s just life. The question is whether you both choose to climb back in together.

About Figs O’Sullivan, LMFT
Figs is a licensed marriage and family therapist with 16+ years of experience working with couples. He’s the co-founder of Empathi, host of the “Come Here to Me” podcast, and author of an upcoming book on relationships and the systems that shape how we love.
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Figs O'Sullivan is a Licensed Marriage and Family Therapist (LMFT) and the founder of Empathi. For 17 years he has helped couples move out of disconnection and back into secure, loving connection, drawing on Emotionally Focused Therapy and attachment science. With his wife Teale, he runs a San Francisco couples therapy practice, is a relationship expert to the Stars and Silicon Valley, and built Figlet, an AI relationship coach trained on their clinical work. His approach has guided more than 41,000 relationship assessments.

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Frequently Asked Questions

Can you really prevent your partner from cheating?+
Here's the truth: you can't control another person, but you can create the conditions where betrayal becomes far less likely. Most affairs don't happen because someone is fundamentally broken. They happen because of disconnection. When partners feel unseen or like they're performing rather than living inside the relationship, that's when vulnerability enters. The real protection isn't surveillance or rules. It's what I call proof-of-work repair. Consistent, unglamorous connection that keeps your bond secure. Think of it like maintaining a house. You don't wait for the roof to cave in before you fix the leak.
What are the warning signs that my relationship is vulnerable to infidelity?+
Watch for what I call the Waltz of Pain. When one partner becomes the Relentless Lover (pursuing, protesting for closeness) and the other becomes the Reluctant Lover (withdrawing into shame), you've got a dangerous drift happening. Other red flags: performing your partnership instead of living in it, feeling like roommates rather than lovers, chronic repair avoidance, or when conflict becomes about winning rather than understanding. The Body as the First Ledger never lies. If you're both walking around with unrepaired hurts, your nervous systems are keeping score, creating the exact conditions where someone might seek comfort elsewhere.
How do I rebuild trust if we've already had problems with betrayal?+
Rebuilding after betrayal requires what I call One-Way Repair. This isn't the usual 'we both have work to do' approach. The betrayer must do the heavy lifting of empathic repair first, understanding the trauma they've caused without asking for immediate forgiveness. The Cherry and the Cake principle applies here: saying sorry is just the cherry. The cake is sustained proof-of-work of empathy over time. This process rewires the nervous system slowly, creating what I call The Missing Experience of safety. If you're struggling with this repair work, Figlet, our AI relationship coach, can help guide you through these conversations between sessions.