Why We Go Back to Exes

In a study of young American adults, about 44% said they had gotten back together with an ex at least once, and about half said they had sex with an ex again after breaking up. Numbers like these cannot be explained by weak character - this happens to too many people.

Relationships that break up and get back together in a cycle are called cyclical in research - "together, then apart." You are pulled back not by one reason but by several ordinary mechanisms - and they switch on by themselves, without you choosing them.

Memories have a pattern: the emotional charge of unpleasant episodes fades faster than that of pleasant ones. A couple of months later, you remember that conversation in the kitchen, but no longer feel what it was like to stand there. But you can still feel the way he laughed. This is an average tendency; it works differently with truly painful experiences, but more often, the past gets edited in a positive direction.

Then the comparison becomes unfair: an edited version of him against your evening today. Longing itself, by the way, fades faster than people predict beforehand - but it fades in waves. Every "I'll just look at his stories" brings it almost back to its previous level.

After a breakup, it is not just the connection that falls apart, but part of how you describe yourself: roles disappear, weekend plans disappear, and so does the person you text first with news. A breakup temporarily blurs your sense of "who I am," and getting back together restores it faster than anything else. From the inside, this feels like "it's easier with him," when what got easier was the return of a familiar routine.

Unpredictability works separately. While he answers sometimes and disappears other times, the anticipation holds your attention more strongly than a steady "yes" would. That is why the stickiest relationships are often not the warmest ones, but the most unstable.

At the same time, cyclical couples report, on average, more relationship uncertainty and less satisfaction than couples without these cycles. Getting back together eases the longing, but it does not itself fix what caused the breakup - if nothing specific changed between attempts.

The pull comes in episodes, often in the evening, and each episode has a peak. It does not keep rising forever: if you do not act on it, the intensity fades on its own after a while. A long exhale is simply a way to get through that moment without opening the chat.