A partner who never complains, never pushes back, and always seems fine with whatever everyone else wants can look, from the outside, like an easy person to be with. Two studies that measured what’s actually happening on the other side of that dynamic suggest otherwise, that being close to someone who consistently suppresses their real feelings carries a real, measurable cost, for the other person as much as for the people-pleaser themselves.
The clearest evidence comes from a 2012 study by Emily Impett and colleagues, published in Personality and Social Psychology Bulletin. The researchers recruited 80 dating couples, 160 people total, and after an initial lab task, had 158 of them complete nightly diaries for 14 days, nearly 1,900 diary entries in all, tracking days when one partner sacrificed something for the other and whether they suppressed their true feelings about it while doing so. On days when a partner suppressed their real feelings while sacrificing, the other partner reported significantly less relationship satisfaction, significantly more conflict, more negative emotion, and lower overall life satisfaction, compared to ordinary days. Most strikingly, suppressed sacrifice didn’t just fail to help, it actively backfired, on those days, the receiving partner’s reported relationship quality was significantly lower than on days with no sacrifice at all. In other words, a partner would have been better off not sacrificing anything than sacrificing while hiding how they really felt about it. The researchers traced this cost specifically to a felt lack of authenticity, the receiving partner could sense something wasn’t genuine, even without being told directly.
A second study helps show that this cost isn’t just emotional, it shows up physically, even between people who barely know each other. In a 2003 study by Emma Butler and colleagues, published in Emotion, the researchers ran two experiments pairing unacquainted women to discuss an upsetting film, randomly instructing one member of each pair to either suppress her emotions, express them naturally, or reappraise the situation, while her partner received no instructions at all. Partners paired with someone suppressing her emotions showed a significantly larger rise in blood pressure than partners paired with someone expressing naturally or reappraising. In a replication, the same pattern held, and partners of suppressors also reported significantly less rapport and significantly less liking for their partner, less interest in becoming friends. The researchers traced this to a drop in responsiveness, the suppressing partner became less engaged and attuned in the interaction, and that disconnection, not the hidden feelings themselves, was what soured the other person’s experience.
Together, these two studies suggest that living or being close to a chronic people-pleaser carries a cost that’s easy to overlook precisely because it doesn’t look like conflict on the surface. Impett and colleagues’ research shows that suppressed sacrifice in a real relationship measurably erodes the other partner’s day-to-day satisfaction, sometimes worse than if no sacrifice had happened at all. Butler and colleagues’ research shows that even brief exposure to someone masking their feelings produces a real physiological stress response and a drop in liking in the other person, evidence that the disconnection is felt, not just assumed. Between the two, the appearance of an easygoing partner may be hiding a relationship that’s quietly working against itself.
It’s worth being honest about what these two studies don’t establish. Impett and colleagues’ research is correlational within the diary data, and while the pattern was consistent across nearly two weeks of daily reports, it can’t fully separate suppression itself from other factors present on the same difficult days. Butler and colleagues’ research involved brief lab interactions between strangers, not long-term relationships, so while the physiological and rapport effects were real and significant, how they compound over years of a real relationship is a separate question these particular experiments weren’t designed to answer.
Within those honest limits, the research offers a genuinely useful reframe for anyone in a relationship with someone who rarely says what they actually want. The apparent ease isn’t free. Both studies point to the same underlying cost, a partner who can’t be authentic leaves the other person quietly worse off, even when nothing looks wrong on the surface.