1. Phubbing Your Partner Mid Conversation
Phone snubbing, or “phubbing,” is the habit of glancing at your phone while your partner is talking to you, and it turns out to be far more corrosive than most people assume. Should it become a habit, phubbing might leave a partner feeling consistently as though they’re less important than whatever’s on the phone screen that day, and according to a 2025 study, this seemingly small behavior can have a surprisingly deep impact on partners and the relationship as a whole. The behavior does not need to happen constantly to register emotionally. Even occasional phubbing can chip away at a partner’s sense of being heard.
Researchers behind that study were interested in how something as ordinary as a phone can cause lasting damage to a couple’s intimacy, so they surveyed 51 couples who were quarantining together during the pandemic and measured how often participants felt phubbed and how deprived of affection they’d been feeling. The pattern they found lines up with older research on divided attention in relationships. When one partner consistently splits focus between a screen and a conversation, the other tends to internalize that as low priority, even if nothing was ever said out loud.
2. Keeping Score Instead of Keeping Faith
Some couples fall into a habit of mentally tallying who did the dishes last, who paid for dinner, or who apologized first. Psychologists explain that keeping score is often rooted in family patterns, since people raised in households where parents kept track of every chore or favor may unconsciously repeat the same dynamic. It can feel like fairness, but it rarely functions that way in practice.
Scorekeeping can also become a passive way of expressing anger or trying to teach a lesson, but instead of resolving conflict it creates a cycle of blame and defensiveness, and research in the Journal of Personality and Social Psychology suggests these behaviors function like the silent treatment, eroding emotional safety and trust. Over time, couples locked in this dynamic report feeling less connected, more hostile, and more likely to have explosive arguments. The irony is that most scorekeepers believe they are protecting the relationship’s balance, when they are actually undermining its warmth.
3. Criticizing Character Instead of Addressing Behavior
There is a real difference between complaining about something specific and criticizing who someone is as a person, and Dr. John Gottman’s decades of couples research treat this distinction as foundational. Criticizing a partner is different from offering a critique or voicing a complaint, since a complaint is about a specific issue while criticism is an attack on a partner’s character, effectively dismantling their whole being. A complaint sounds like a request. Criticism sounds like a verdict.
Gottman’s team has watched this pattern show up early in troubled relationships, often before either partner realizes anything is wrong. His research found that these patterns tend to appear in a predictable cascade, where criticism opens the door and, once it becomes habitual, contempt follows. That escalation is precisely why habitual criticism, even when it feels justified in the moment, tends to do more long-term damage than the issue that triggered it.
4. Letting Contempt Slip Into Everyday Tone
Of the four communication patterns Gottman identified as most destructive, contempt stands apart from the rest in terms of predictive power. Contempt was the single strongest predictor of divorce, more powerful than criticism, defensiveness, or stonewalling alone. It shows up in eye rolls, sarcastic tone, and the subtle sense that one partner sees the other as beneath them, which is exactly what makes it so damaging.
Contempt communicates disgust and moral superiority through eye-rolling, sarcasm, mockery, or name-calling, distinguishing it from defensiveness, which deflects responsibility, and stonewalling, which involves emotional and physical withdrawal. Couples rarely think of a raised eyebrow or a mocking laugh as a habit worth worrying about. Yet these small gestures, repeated often enough, communicate a lack of respect that is difficult to walk back.
5. Shutting Down Instead of Staying in the Room
Stonewalling, or withdrawing from a conversation entirely, is often mistaken for keeping the peace, but it tends to have the opposite effect over time. Gottman’s research shows that men are more likely to stonewall than women because men’s physiological stress responses during conflict are often more intense, getting flooded with a heart rate over 100 beats per minute and shutting down to cope. The person stonewalling often believes they are avoiding a fight, while their partner experiences the silence as abandonment.
Left unaddressed, this habit becomes self-reinforcing rather than protective. When defensiveness fails to resolve anything, stonewalling takes over, and the relationship enters a loop where each partner’s worst response triggers the other’s worst response, shrinking the space for repair with every cycle. What starts as a coping mechanism for one difficult conversation can quietly become the default response to any disagreement at all.
6. Assuming Your Partner Should Just Know
Many people expect partners to intuit their needs without ever stating them directly, a pattern psychologists have a specific name for. Instead of expressing their needs clearly, many people expect their partners to know exactly what they need, when they need it, which is an easy way to set themselves up for disappointment; psychologists refer to this as the “illusion of transparency,” a cognitive bias where people assume their emotions and desires are obvious to others when they aren’t. The frustration that follows rarely gets traced back to its actual source.
According to research, overestimating how much a partner knows about one’s internal thoughts can be harmful and lead to resentment, since communication is the foundation of a strong, healthy relationship. This habit tends to sneak in gradually, especially in long relationships where couples assume years together should have made mind reading unnecessary. In reality, the opposite tends to be true, since familiarity often makes people less likely to explain themselves, not more.
7. Curating What You Share Instead of Being Fully Honest
Some habits look harmless, even considerate, but researchers argue they quietly undermine intimacy. Psychological researchers refer to this as “selective disclosure,” the act of sharing strategically to manage how one is perceived rather than to build genuine intimacy, and a study published in Personal Relationships found that people with higher attachment avoidance tend to share positive events more often than negative ones, curating what their partners see. The partner on the receiving end often senses something is missing, even without knowing exactly what.
The instinct behind this habit is understandable. Nobody wants to look bad in front of someone they love, so the temptation to soften or omit uncomfortable truths feels protective rather than dishonest. Research consistently shows the opposite to be true, since long-term studies on marital stability found that couples who repair in real time by addressing small ruptures as they happen are far more resilient than those who avoid confrontation, and silence breaks couples down far more than conflict does.
8. Quietly Overfunctioning for the Whole Relationship
Some partners take on nearly all of the emotional and logistical labor of a relationship without ever being asked to, and this habit often traces back further than the relationship itself. The habit of compulsive overfunctioning often develops early, as many people learn through implicit or explicit cues, like praise or reward, that maintaining closeness is a matter of being useful, agreeable, or indispensable. In adulthood, that early lesson resurfaces as a quiet compulsion to manage everything so the relationship never seems to falter.
The imbalance this creates is measurable, not just anecdotal. A study published in Sex Roles shows that women disproportionately carry the mental and emotional labor of household management, such as coordinating schedules, maintaining order, and monitoring children’s emotional states, and the women who felt primarily responsible for that functioning reported lower life satisfaction and greater role overload. The partner doing the overfunctioning rarely announces the imbalance out loud, which means resentment can build for years before either person names what is actually happening.
9. Letting Small Ruptures Go Unrepaired
Every relationship experiences small tensions, a sharp word, a missed cue, a plan that falls through. What separates resilient couples from struggling ones is not the absence of these moments but whether they get addressed. Research consistently shows that avoiding rupture is what makes relationships fragile, and long-term studies on marital stability found that couples who repair in real time are far more resilient than those who avoid confrontation.
The habit of letting things slide often feels like the mature choice in the moment. It avoids an argument, keeps the evening pleasant, and postpones discomfort to another day. But unaddressed friction rarely disappears on its own. When left unchecked, these small patterns can slowly dismantle the trust, respect, and connection that hold couples together, turning what should have been a minor moment into a lasting fracture.
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