How to Rebuild Trust after Lying in a Relationship

Finding out that your partner lied to you can leave you feeling like the ground shifted underneath you.

Maybe the lie was about something big, or maybe it was something that seemed small to your partner but felt deeply significant to you. Either way, you may find yourself questioning what you thought you knew, replaying conversations, looking for things you missed, or wondering, “How am I supposed to trust them again?”

The good news: trust can be rebuilt.

Some people think of trust as something that is either on or off, like a candle that can be lit or blown out. Instead, think of trust more as a room full of candles, with each one needing to be lit consistently, one by one. 🕯️

Trust isn’t usually rebuilt through one grand apology or by simply “letting time heal.”

Trust is grown through consistent experiences of honesty, accountability, and emotional safety over time.

(And both partners have a role in that process.)

If You Were the One Who Lied:

1. Take full responsibility

The first step is taking full responsibility. Not explaining why you lied, not making excuses, not shifting blame, not taking accountability for only part of the lie. FULL responsibility.

That means being able to say:

“I lied, and I understand that this hurt you and changed how safe you feel with me.”

It can be tempting to explain why you lied:

“I was scared you'd be upset.”

“I didn't want to hurt you.”

“It wasn't that big of a deal.”

Understanding why you lied is important, but it shouldn't become an excuse for the lie. There is a difference between explaining your behavior and shifting responsibility for it.

2. Get curious about what was happening underneath the dishonesty

After taking full responsibility, it is worth getting curious about what was happening underneath the dishonesty.

Were you avoiding conflict? Afraid of disappointing your partner? Ashamed? Trying to protect yourself from consequences?

Understanding why you lied does not function as an excuse for the lie; instead, understanding the why can help you change the pattern and have a plan for not repeating it.

3. Be proactive. Don't make your partner carry the entire burden of repair.

After trust has been broken, the hurt partner may be more sensitive to changes in your behavior, communication, or availability. They may have questions or moments where the hurt resurfaces.

At times, you might feel frustrated and think, “But I already apologized. When are we going to move past this?”

Remember: your partner isn't necessarily choosing to stay stuck and hurt. Their nervous system may still be trying to figure out whether it is safe to trust you again.

Since you’re the one who lied, you’ve already had time to process it. You already know about it. For your partner, they might have just discovered the lie and still need time to process.

Be proactive. Check in. Offer reassurance. Bring it up sometimes instead of waiting for them to do it.

Sometimes repair sounds as simple as:

“I know this has been hard for you. I'm still here, and I'm willing to keep working through it with you.”

That kind of consistency matters.

It’s incredibly important to be patient and offer space for when your partner needs to talk about what happened. Yes, there is a difference between processing the betrayal and getting stuck in rumination, but repeatedly shutting down the conversation with “We've already talked about this” usually doesn't help either.

If You Were the One Who Was Hurt:

1. Remember: your partner's decision to lie was not your fault

First and foremost, remember this: Your partner's decision to lie was not your fault.

After someone lies to you, it can be surprisingly easy to start doubting yourself. How did I not know? Was I naive? What else have I missed? Can I trust my own judgment anymore?

Part of rebuilding trust is actually rebuilding trust with yourself.

You can learn to trust your instincts again. You can remind yourself that you made decisions based on the information you had at the time. You can forgive yourself for not knowing something you didn't know.

2. Practice being open to receiving repair attempts

If your partner is genuinely making an effort to repair the relationship, be open.

This doesn't mean you have to immediately trust them again. It doesn't mean you have to pretend you're over it.

It means noticing the small moments when they are showing you, through their actions, that they are trying to do things differently.

3. Know that your anger makes sense. But what's underneath it?

Anger is a very normal response to betrayal. It can protect you and signal that something important was violated.

But sometimes anger is sitting on top of something more vulnerable.

Maybe you're scared. Grieving. Embarrassed. Afraid it will happen again. Maybe you're heartbroken that the relationship isn't what you thought it was.

When you're ready to talk with your partner, try looking underneath the anger and expressing what is happening for you.

Instead of only saying, “You don't care about me,” you might say:

“When I don't know what's going on, I get scared that I'm going to be blindsided again. I need more reassurance from you right now.”

You don't have to communicate perfectly. You just want to create an opening for your partner to really hear the hurt underneath the anger.

So, How Do You Rebuild Trust After Lying?

Not by pretending it didn't happen, or simply ignoring it and letting time heal.

Not by insisting that it's "not that big of a deal."

And not by expecting one apology to erase the hurt.

Trust is rebuilt in the micro moments: telling the truth when it's uncomfortable, following through on what you said you'd do, being willing to have difficult conversations, offering reassurance without being asked, and showing your partner through your actions that something has changed.

Over time, those experiences can begin to add up, creating a new sense of safety.

You don't need to forget that it happened, but your nervous system needs enough new experiences to know that what is happening now is different.

The silver lining: we can grow closer through conflict. Through the process of rebuilding trust, sometimeds we end up creating a relationship that is more honest, intentional, and connected than the one you had before.

Looking for Couples Therapy in Santa Monica?

If you're trying to rebuild trust after lying, betrayal, or a difficult rupture in your relationship, couples therapy can give you a space to slow things down and work through what happened together.

I work with couples navigating broken trust, communication struggles, relationship transitions, and feeling disconnected from one another.

I offer a free 20-minute consultation so we can talk about what you're going through and see if we're a good fit.

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Kalie Pham, LMFT (#156007), is a Licensed Marriage and Family Therapist and the founder of Inner Compass Therapy in Santa Monica, California. She specializes in couples therapy, EMDR, and identity-focused individual work. Kalie blends attachment-based, narrative, and somatic approaches to help clients understand themselves, heal relationship patterns, and move toward more grounded connection.