Should I have stayed after the cheating?

You probably made the call you could make with what you knew, and second-guessing it later is common enough that it isn’t proof you were wrong. The more useful question isn’t “could it have worked if I’d stayed?” It’s “was it working, and what is this doubt asking me for right now?”

Why does this question keep coming back?

Meet Priya. She’s 43, a project manager, and fourteen months ago she ended a nine-year relationship after finding messages that left no room for interpretation. She moved, rebuilt a routine, and most days she’s fine. Then a friend’s tenth-anniversary party happens. Everyone’s toasting, someone’s husband tears up, and on the drive home the old question lands in her lap: Should I have stayed? Did I throw away nine years over one thing?

Pulled apart, here’s what’s actually going on:

• What happened: Her partner had an affair. She found out. She left.
• The reading: If I’d been more forgiving, we’d be the couple raising a glass tonight.
• The fear: That she’s alone because of her own choice, and it was the wrong one.
• The next step: Separate missing a partnership from missing that partnership.

The timing is telling. Regret researchers Neal Roese and Amy Summerville pooled 11 studies of what people regret most, and romance came third, behind only education and career.1 They also found that regret is sharpest where people feel they had a real chance to do things differently.1 Leaving was a choice, so it’s exactly the kind of decision regret likes to revisit, especially on nights built around other people’s couplehood.

Could it have worked if you’d stayed?

Maybe. Some couples do recover from an affair, and it’s worth being honest about that. In a long-term follow-up of couples who went through a structured therapy trial, Rebeca Marín, Andrew Christensen and David Atkins found that 57% of couples whose affair had come into the open were still married five years later.2 Among couples where the affair stayed secret, only 20% were.2 Couples without infidelity did best, at 77%.2

Two things matter about that study. It followed just 19 infidelity couples, so it’s a small window.2 And those were couples who both showed up for months of therapy, with the affair out in the open. Recovery, when it happened, was a project two people chose together.

So the real question isn’t whether recovery is possible in general. It’s whether your situation had what recovery needs: a partner who fully owned what happened, ended it, answered your questions without making you the problem, and wanted to do the slow work. If those weren’t there, staying wouldn’t have meant the anniversary party. It would have meant staying in what you already had.

Why does the past look better from here?

Because memory is a generous editor. When you’re lonely, the mind tends to replay the Sunday mornings and the inside jokes, and skip the months of checking their phone in your head while they were in the shower.

Try this: write down the three hardest weeks of the last year together, in plain detail. Then the three best. Read both lists before deciding which one your doubt is quoting.

There’s also some evidence that leaving a genuinely unhappy relationship tends to pay off over time. In a national study following about 1,600 adults across roughly ten years, Kyle Bourassa, David Sbarra and Mark Whisman found that women who left the lowest quality marriages ended up with the highest life satisfaction among women with similar marriages, while women who left higher quality marriages fared worst.3 They found no such pattern for men,3 and a study can’t tell you which group you belong to. But it’s a useful reminder that the quality of what you left matters more than the fact that you left.

Is the doubt really about them?

Often it’s about loneliness, and that deserves real attention. Missing closeness, a plus-one, someone who knows your coffee order: those are needs, not mistakes. Notice whether you miss them, specifically, or the shape of a shared life. The second one can be rebuilt, and with someone who doesn’t make you choose between love and honesty.

It can also be about blame. “I gave up” is a common story people tell after leaving an affair. Here, the research is encouraging. In a study by David Sbarra, Hillary Smith and Matthias Mehl of 105 recently separated adults (average age 40, married more than 13 years), people who treated themselves with more self-compassion adjusted better soon after the split and still did nine months later.4 Being kind to yourself about this decision isn’t letting yourself off the hook. It’s part of how people recover.

And if your ex had other partners while you were together, one practical step often gets lost in the emotional fallout: the CDC recommends an honest conversation with a healthcare provider about which STI tests make sense for you, and lists new partners, multiple partners or a partner who has an STI among the risk factors that matter.5

When is it more than second-guessing?

If the replaying is constant, keeps you from sleeping or working, or comes with a heavy low mood that won’t lift, it’s more than a decision you’re reviewing. A licensed mental-health professional is the right help for distress like that, and you don’t need a crisis to qualify.

What can you do this week?

• Write the four lines. What happened, what you’re telling yourself about it, what you’re afraid of, and one next step. Keep it to a page.
• Do the hardest-weeks list. Three hard, three good, side by side. Read them on a calm afternoon, not after a wedding.
• Name the need under the doubt. Company, touch, someone to plan with. Pick one way to meet it this week that doesn’t involve your ex.
• Mute before the big nights. If anniversaries and holidays are your triggers, plan those evenings ahead with people who make you laugh.
• Book the practical stuff. A doctor’s appointment, a therapist consult, whatever you’ve been postponing.

You don’t have to settle the question forever this week. You just have to stop letting it decide your evenings.