Forgiveness in a relationship: what it is, and what it isn't

Updated on 10/07/20266 min read

He holds her close while she stays thoughtful: the time it takes to forgive

There was that lie, that betrayal, or those words you can't seem to forget. And a question that keeps coming back: “Can I forgive? Should I?” For researchers, forgiving means gradually letting go of wanting your partner to pay, and sometimes finding some warmth toward them again. It isn't forgetting, saying it wasn't a big deal, or being obliged to stay. Forgiveness happens inside you; trust is rebuilt by two people, and only if the other person truly changes.

When you can't seem to move on

Sometimes it's a big wound: an affair, a lie about money, a secret discovered by accident. Sometimes it's quieter: a humiliating remark in front of friends, an absence at the worst possible moment, a promise broken one time too many. Either way, something is stuck. You think about it in the shower, in the car, in the middle of an evening that was going well.

People around you say you should "move on." Or the opposite: that some things are unforgivable. The word forgiveness carries religious, moral and family baggage. The psychologists who have studied it since the 1990s offer a simpler and more useful definition.

For Michael McCullough, Everett Worthington and their colleagues, forgiving is a change in what you want to do toward the other person: the urge to get even fades, so does the urge to keep them at arm's length, and you become able to treat them decently again, even kindly. Other researchers (Frank Fincham and his colleagues) add an important point: to forgive, you first have to admit you were hurt. You can't forgive what you refuse to see.

Key point: forgiveness is about what you feel toward the other person. On its own, it doesn't decide what happens next in your story.

Four things forgiveness is not

A lot of people get stuck because of a mix-up.

Forgiving is not forgetting. The memory stays. Forgiving means continuing to choose not to make the other person pay when the memory comes back, not pretending nothing happened.

Forgiving is not excusing. Excusing means saying "it's fine." Forgiving means saying "it wasn't fine, and I'm still choosing not to get even." There has to be a wrong for there to be something to forgive.

Forgiving is not reconciling. As Everett Worthington puts it, forgiveness happens inside one person. Reconciliation happens between two people, and it requires trust to be rebuilt through actions. You can forgive and leave. You can also stay without having forgiven yet, while trust comes back.

Forgiving is not a duty with a deadline. Asking someone who's been hurt to "get over it" quickly adds a second wound to the first.

Deciding to forgive, then feeling it

Everett Worthington, one of the researchers who has done the most work on forgiveness, draws a distinction that brings a lot of people relief.

First, there's decided forgiveness. It's an intention: "I'm choosing not to get even, and to treat you differently." You can make that choice in a moment.

Then there's felt forgiveness. That's when the emotions themselves change: anger and resentment slowly give way to something calmer. This one takes time, sometimes a lot of it. And it's the one that does the most good.

This distinction frees you from a false choice. You can sincerely decide to forgive and still feel the anger rising three weeks later, when you come across a photo or a date approaches. That doesn't mean your forgiveness was fake. It means the decision is made, and the feelings are moving at their own pace.

When the anger flares up again, it can help to say so rather than hide it: "It came back today when I saw that message. I'm not reopening everything, I just need you to know." A partner who is serious about repair can hear that, and it keeps resentment from building up in silence.

Forgiveness can be learned

The good news is that we know something about what helps. In McCullough and Worthington's work, a sincere apology made forgiveness easier, because it opened the door to a little understanding for the person who did the hurting. Replaying the scene over and over, on the other hand, makes forgiveness harder.

Researchers have also tested specific methods. In 2014, a team led by Nathaniel Wade reviewed around fifty studies: programs designed to help people forgive worked clearly better than doing nothing, and they also eased sadness and anxiety. The longer the program, the more it helped.

In 2024, a large study in five countries with nearly 4,600 people (Tyler VanderWeele, Everett Worthington and their colleagues) tested a simple workbook that took a few hours to complete on your own. Two weeks later, the people who had used it felt less resentment, and a little less sadness and anxiety. Not all the hurts were about relationships, and the follow-up was short: it shows forgiveness can be worked on, not that anyone gets over a betrayal in two weeks.

The workbook is built on simple steps: recall the hurt honestly, without playing it down; try to understand what might have driven the other person, without excusing it; offer forgiveness as a gift, not something they're owed; commit to it; and hold on to it when doubt comes back. One exercise in this spirit: write the story of the hurt from the other person's point of view, without excusing anything. It's uncomfortable, and often eye-opening.

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When forgiving can hurt you

Talk about forgiveness often skips this point, and it's essential. Psychologist James McNulty followed newlywed couples for several years. With a partner who was rarely hurtful, being forgiving helped the relationship. But with a partner who was often contemptuous, forgiving everything, every time, went along with a relationship that got worse. And among the most forgiving spouses, the partner's aggression didn't go down.

Other studies (Laura Luchies, Eli Finkel and their colleagues) help explain why. When the person who caused the hurt had truly made amends (owned it, changed, shown you'd be respected from now on), forgiving boosted self-respect. When they hadn't made amends, forgiving wore it down. The researchers call it the "doormat effect": you end up feeling like someone people can walk all over.

That doesn't mean you shouldn't forgive. It means forgiveness doesn't fix behavior that keeps happening. If you're living with repeated humiliation, threats or violence, forgiving never means you have to stay. In the UK, the National Domestic Abuse Helpline (0808 2000 247) is free and open 24 hours a day; in the US, the National Domestic Violence Hotline (1-800-799-7233) is too. If you're in immediate danger, call 999 or 911.

After a betrayal: rebuilding, if you choose to

When a couple decides to carry on after an affair, therapists Kristina Coop Gordon, Donald Baucom and Douglas Snyder describe a path in three stages: absorbing the shock, understanding what happened and why, then moving forward, together or apart. Their early results are encouraging, even if they involve small numbers of couples.

A few signposts stand out from their work and that of other therapists:

  • Repair starts with the person who caused the hurt. Owning it without minimizing ("yes, I lied to you, and it was serious"), answering questions patiently, accepting full transparency for as long as it takes.
  • Forgiveness can't be demanded. "You should be over this by now" only reopens the wound. You can hope for forgiveness, not require it.
  • Understanding isn't justifying. Looking at what had weakened the relationship helps rebuild it, without shifting the betrayal onto the person who was betrayed.
  • Get support. Couples therapy offers a place where anger can be expressed without destroying everything. Support just for yourself is valuable too, whatever you decide.

Over time, forgiving can become what researchers describe: not erasing, but no longer wanting to make the other person pay. And then deciding, freely, what place they'll keep in your life. This path has no timetable, and it doesn't need one.

Frequently asked questions

Does forgiving mean forgetting?

No. The memory of the hurt stays. Forgiving means letting go of wanting to make the other person pay or keeping them at a distance, and making that choice again when the memory comes back.

Can you forgive without getting back together?

Yes. Forgiveness happens inside one person; reconciliation is built by two and requires trust to be rebuilt through actions. You can forgive and still choose to leave.

How do you forgive cheating?

There's no set timeline or guaranteed method. Therapists describe three stages (absorbing the shock, understanding, moving forward) and stress that repair starts with the partner who cheated. Couples therapy often helps get through this period.

Can forgiveness be a bad thing?

It can hurt when the other person doesn't change. James McNulty's research shows that always forgiving a partner who is often contemptuous or aggressive goes along with a relationship that gets worse. Forgiving never means accepting that the hurt continues.

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This article draws on published research, cited with its authors. It is for information only and does not replace the support of a psychologist, couples therapist or physician.