When people ask me what causes the most damage in relationships, they expect me to list the usual suspects, such as financial problems and intimate relationship problems. And they’re not wrong to assume so, since both money and sex always come up in research on conflict.
But as a psychologist who has studied couples for years, I’ve noticed something else. In my experience, couples who silently resent each other are almost always running their mental ledgers.
They tally up who cooked last night, who was more tired, who canceled plans last time, and who they “owe”. Whether they admit it or not, there is an invisible calculation beneath the surface of every disagreement that sours their relationship.
But the happiest couples I’ve ever seen have stopped fighting over who is doing more. They don’t keep track of scores to begin with.
Two types of relationships
Psychologists have named two different operating systems that can run relationships.
In an exchange relationship, partners informally keep track of what they give and what they get, and expect the situation to level out quickly. Example: I picked him up from school on Monday, so you will do it on Tuesday. In a communal relationship, partners give based on what the other person needs in the moment, rather than expecting something in return that day, and believe that things are balanced over the duration of the relationship, not just the day or week.
Most relationships start somewhere between the two types. What I’ve found in 13 years of research with more than 7,000 couples is that couples who don’t get used to what they have in common and remain entrenched in exchange logic see their satisfaction erode over time.
Take a photo of the couple after dinner. The kitchen is a mess, the dogs need a walk, and one of them has an early flight scheduled tomorrow. In an exchange relationship, someone is quietly calculating. “I cooked, so the plate is yours. I walked the dog Monday and Tuesday, so tonight it’s your turn.”
When the math doesn’t add up, anger begins to build up. Every dish becomes a data point. Every extra walk with the dog becomes evidence of a case that no one has officially constructed. No one declares themselves to be the financial manager of the relationship, but the books are kept anyway.
In communal relations, the same scene plays out differently. The person with more energy left receives either the dish or the dog. Not because the rotation tells you to do it, but because someone has to and someone can. No one keeps it as a favor. Work is still roughly evenly divided over time — they’re not martyrs — but no one is tracking it task by task.
To put it bluntly, the actual chronic imbalance itself is the problem. A 2023 review of more than 30 studies found that invisible and unequal labor often falls primarily on women and is associated with stress, lower life and relationship satisfaction, and negative career outcomes.
So pretending that the imbalance isn’t happening, like when one partner regularly absorbs all the work and gets it done with a smile, only delays the same resentment that often festers in exchange relationships.
How happy couples avoid this quarrel
Healthy couples always notice when things are lopsided. The difference is what you do with that information. They take it as a pattern to work through together, rather than a balance that needs to be paid off immediately or ammunition for irrelevant arguments.
The changes I see in couples who make this change are usually verbal before behavioral. “You owe me” becomes “We’re late.” “I ended up dropping you off and picking you up again” changes to “Lately, mornings for both of us are difficult.”
Research supports the benefits of this approach. Couples who use the word “we” more during conflict have healthier physiological and emotional responses during and after the conflict.
When expressed this way, the problem stops being about one person’s bookkeeping and starts to become about the team’s workload. After all, this problem is much easier to solve.
Dr. Mark Travers is a psychologist specializing in human relationships. He holds degrees from Cornell University and the University of Colorado Boulder. He is the lead psychologist at Awake Therapy, a telemedicine company that provides online psychotherapy, counseling, and coaching. He is also the curator of the popular mental health and wellness website Therapytips.org.
