When someone stays in an unhappy relationship for years, the explanations from the outside are always the same:
The kids. The house. The money. The complication of leaving. The fear of being alone.
And yeah, sometimes those are part of it.
But most people who’ve actually stayed in an unhappy relationship for a long time will tell you that the real reasons are quieter and stranger than the ones their friends list. They’re not about logistics. They’re about what the person’s come to believe, somewhere underneath everything they’ve been telling themselves.
To be clear, this isn’t about whether someone should leave. It’s about what’s actually holding them in place when they can’t quite explain it themselves. Three internal beliefs, in particular, tend to do most of the heavy lifting. None of them are about him, or her, or the practicalities. All of them are about the person staying.
1. They believe the problem is them, not the relationship
This is the one most people won’t say out loud, even to their closest friends.
After years of trying to make a relationship work, a quiet conclusion starts to form. It doesn’t usually arrive as a thought. It arrives as a feeling: that whatever’s wrong here is something inside them, something they brought with them, something they’d bring into the next relationship too if they were foolish enough to try one.
The evidence builds up in small ways.
Their partner pointing out, over and over, that they’re too sensitive, too distant, too needy, too cold. Their own private comparisons to friends who seem easier in their marriages. The way fights tend to circle back to something about who they are, rather than something the two of them are doing together.
After enough years of that, they settle into a quiet conviction: it isn’t that this relationship is bad. It’s that they’re hard to be in a relationship with, and this one’s just been patient enough to put up with it.
If you believe that, leaving makes no sense. Leaving would mean dragging the actual problem—yourself—into a new relationship where you’d ruin that one too. So you stay, not because the relationship’s working, but because you’ve quietly decided you’re the broken part. And here, at least, you’re broken with someone who’s agreed to put up with you.
The hard thing is that the belief usually isn’t true.
Most of the time, the person who’s come to think of themselves as the unworkable one is perfectly capable of being in a different relationship—a better one, even. What they’ve absorbed isn’t an accurate read on themselves. It’s the slow residue of years inside one specific relationship that’s convinced them their own inner life is what’s broken. Their friends don’t see them this way. Their siblings don’t. Their own kids don’t. Only they do, and only inside this relationship.
2. The bar they’ve set for leaving is so high they’ll never clear it
The second one is about what would have to happen for leaving to feel justified.
Most people who stay in chronically unhappy relationships have, at some point, drawn a private line in their head. They picture it as something obvious—abuse, infidelity, the partner becoming someone they don’t recognize. Something so clear that nobody, including themselves, could question whether leaving was warranted.
The trouble is, their actual relationship doesn’t reach the line. It isn’t abusive. There hasn’t been an affair. Their partner hasn’t turned into someone unrecognizable. The relationship’s just dull. Lonely. A quiet grief. Years of going to bed next to someone they don’t feel met by, of conversations that don’t really go anywhere, of a low-grade unhappiness that doesn’t produce any of the dramatic evidence they’ve decided they need.
So they tell themselves they’re not unhappy enough. They look at people in worse situations and feel guilty for even considering leaving theirs. And the line they drew keeps quietly rising, partly because the longer they stay, the more the staying itself feels like an argument for staying.
A piece on the sunk cost fallacy notes that we tend to overemphasize the resources we’ve already invested in something, even when staying costs us more than walking away would. In a long relationship, those resources are everything—years of shared memory, the house, the kids, the small ways two lives have grown into each other. The line to leave climbs alongside all of it, until the only thing that would justify walking out is something so catastrophic that the relationship would have to actually become abusive for it to count.
And so they wait. Not for anything in particular. Just for the thing that would finally clear the line. The thing that would let them say to their friends, with a steady voice, “This is why I had to go.”
That thing usually doesn’t come. Because the line was never really a line. It was a permission slip they’d decided they didn’t have.
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3. They don’t know who they’d be without this relationship
This one is harder to put into words than the first two.
When two people are in a relationship for a long time, their lives intertwine. That isn’t just logistical. It’s psychological.
She’s been his wife, or his partner, for so many years that the title’s stopped feeling like a role and started feeling like part of who she is. The friend group’s built around the couple. The family holidays assume both of them. The story she tells herself about herself—the kind of person she is, the choices she’s made, the life she’s built—has this relationship at the center of it.
Leaving doesn’t just end the relationship. It takes apart the person she’s been for as long as she can remember.
This is the one that produces the most paralysis. The other two—the problem is me, the line is too high—can at least be argued with on paper. The identity one doesn’t really respond to the argument. It isn’t a thought. It’s a feeling that there’s no self on the other side of leaving. The version of her that would exist without this relationship has never existed, and when she tries to picture her, nothing shows up.
There’s another layer underneath this, too. A piece on why people stay in unsatisfying long-term relationships includes a psychologist explaining that nobody wants to admit they made a bad choice. Leaving isn’t just losing the self she is now. It’s a verdict on the woman she’s been all those years—the version of her who chose this partner, defended him to skeptical friends, built a life around him, told her own mother, way back when, that this was the one.
Admitting the relationship isn’t working is admitting that the woman who chose it was, in some way, wrong about something important. For most people, that’s unbearable. It doesn’t just threaten what comes next. It threatens everything that’s already happened.
So she stays. Partly because she doesn’t know who she’d be without the relationship. Partly because leaving would mean admitting that the woman she’s been for twenty years got something fundamental wrong. When she does that math in her head, even quietly, it almost always comes out worse than the math of staying.
