I'm a psychologist who studies couples: The happiest couples never fight about this 1 thing (it's not sex or money)
Psychologist and relationship expert Mark Travers says the happiest couples have stopped fighting about who's doing more. Here's how to avoid it.

TL;DR
- Resentment, often stemming from keeping a mental tally of contributions, is a major relationship damage.
- Exchange relationships involve tracking give-and-take with expected immediate fairness.
- Communal relationships involve giving based on need without expecting same-day returns, trusting long-term balance.
- Couples who remain stuck in exchange logic experience eroding satisfaction over time.
- Happy couples avoid scorekeeping and address imbalances as a team ('we' language) rather than personal debts ('you owe me').
- Chronic imbalance, especially invisible labor often falling on women, leads to stress and dissatisfaction.
- Healthy couples discuss lopsided patterns as a team to fix together, not as a score to be repaid.