When Your Partner Lies About Past Relationships...

When Your Partner Lies About Past Relationships

Pull your chair in a little closer, because I want to speak to this directly.

When a partner lies about their past relationships, the first thing most people do is make it about the lying. And look, I get it. The lying is real. The betrayal of trust is real. I’m not going to sit here and tell you that doesn’t matter.

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You keep scanning their story, searching for the parts they rewrote.

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Ask anything about your own situation and get an answer immediately. Keep asking, think it through, work out what to do next.

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But here’s what I want you to sit with for a moment.

Why do people lie about their past?

Almost always, underneath that lie, is someone who is absolutely terrified of being a disappointment to you. They have a wound that says, “If you really knew me, if you really knew what happened, what I did, who I was with, how many times, whatever the details are, you would decide I’m not enough. You would leave. You would look at me the way everyone else has looked at me.”

Now, I’m not asking you to accept the lie. Please hear me on that. But I am asking you to consider that the person lying to you is probably not a fundamentally dishonest person. They are a scared person who has learned that the truth about themselves is dangerous to share.

Remember those two core questions that drive every relationship? “Are you there for me?” and “Am I enough for you?” That second one is almost certainly what’s driving the lie. They are pre-emptively managing your potential disappointment in them. They are trying to stay safe by controlling the story you have of them.

Here’s where it gets complicated for you.

Because now you’re sitting there and the question “are you there for me?” has been hit like a hammer. You thought this person was showing up honestly, and now you’re finding out they weren’t. So your wound is activated too. You’re scared. You’re hurt. And if you’re not careful, what happens next is both of you go into full protection mode and you stop being able to hear each other at all.

Talk to FigletFigs’ AI mini meHere now, ready when you are

You keep scanning their story, searching for the parts they rewrote.

Do you know you can get personalized answers to all your questions from the same wisdom that wrote this article, right now?

Ask anything about your own situation and get an answer immediately. Keep asking, think it through, work out what to do next.

No credit card required. Your first 10 messages are free.

Ask Figlet about lies about past relationships.

The lie becomes the whole story. And the fear underneath the lie, and the fear underneath your hurt, never gets to speak.

So here’s what I’d want to know if you were sitting in my office. What was the lie specifically about? How did you find out? And when you confronted them, or if you haven’t yet, what do you imagine will happen?

Because the path forward here is not just about accountability for the lie, though that matters. It’s about whether both of you can get to a place where this person can say, “I was terrified you’d leave if you knew the truth about me.” And whether you can hear that without it becoming another reason to punish them.

That’s the hard work. The same scared little animal trying not to be eaten.

The question is, can you two get safe enough with each other that the truth doesn’t feel like a death sentence to them? And can they understand that the lying, however understandable, is actually doing the opposite of what they want? It’s pushing you further away.

If any of this is landing close to home, you can talk it through right now with Figlet, Figs’ AI mini me, and get an answer about your own situation in seconds. Ask Figlet about lies about past relationships..

That’s the conversation worth having.

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.

Read more: How to Rebuild Trust After Lying: What Actually Works

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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

Why do people lie about their past relationships instead of being honest?+
Underneath almost every lie about past relationships is someone who is absolutely terrified of being a disappointment to you. They carry a wound that whispers, 'If you really knew me, if you knew what I did or who I was with, you would decide I'm not enough and leave.' This is classic Reluctant Lover behavior (my framework for the withdrawing partner). They're not lying to hurt you. They're lying because their nervous system has learned that vulnerability equals rejection. The Body as the First Ledger has recorded every moment they were shamed for their past, so lying becomes a survival strategy.
How do I rebuild trust after my partner lied about their relationship history?+
First, understand this isn't really about the lying. It's about two wounded nervous systems colliding. Your partner's lie triggered your abandonment wound, and your reaction confirmed their inadequacy wound. This is the Waltz of Pain in action. Rebuilding trust requires what I call the Proof-of-Work of empathy. Your partner needs to do the emotional labor of understanding why their lie felt like betrayal to you, while you work to see the terror underneath their deception. The solution is never the problem. Jumping straight to 'how do we prevent future lies' bypasses the emotional repair that actually creates safety.
Is it normal to feel triggered when I think about my partner's past relationships?+
Absolutely normal. We are all Babies in Love, meaning our nervous systems react to threats to the bond as if our survival depends on it. Because at one point in our development, it literally did. When you picture your partner with someone else, you're not being 'crazy' or 'insecure.' You're having a childlike (not childish) response to what feels like an existential threat. The key is learning to soothe your nervous system while staying connected to your partner. If you're struggling with these triggers, Figlet, our AI relationship coach, can help you work through these patterns between sessions.