An ordinary workday — an urgent report, a conflict with a colleague, a broken elevator — and in the evening at home the usual warmth toward one's partner suddenly disappears. A new study shows that such fleeting surges of external stress can temporarily dull feelings of love, passion and intimacy, even if the relationship is generally strong.
Researchers Ece Yilmaz of the University of Ottawa and Sarah Stanton of the University of Edinburgh surveyed 100 couples aged 18 to 64 years. Participants daily recorded their level of stress outside the relationship and rated their feelings toward their partner on a seven-point scale. An analysis of the diaries revealed a clear pattern: on days when stress exceeded a person's personal norm, ratings of love and intimacy in the evening dropped by 0,04–0,13 points. The effect persisted even after accounting for mood, relationship duration and the previous day's intimacy.
Notably, chronically high stress did not lead to the same consequences. People accustomed to constant tension seemed to have developed an immunity: their baseline level of love remained stable. What suffers is precisely the deviation from the habitual — a sudden surge to which the psyche has not had time to adapt. This points to a mechanism in which the relationship becomes a kind of "buffer" that absorbs the excess emotional load.
The mechanism can be compared to a home thermostat: if the temperature in a room is usually 22 degrees and suddenly drops to 18, the occupants immediately feel discomfort and begin to complain. At a constant 18 degrees, the body simply readjusts and stops noticing the cold. So it is in a couple: habitual stress does not touch the feelings, while an unexpected one makes them "freeze" for a time.
The study emphasizes the vulnerability of romantic bonds to everyday realities. Small daily fluctuations accumulate, and a couple may not notice how external circumstances gradually erode emotional intimacy. This is especially important to understand in an era when the boundaries between work and personal life are blurring.
The results are a reminder: feelings in a relationship are not an isolated zone but a sensitive system that responds to the entire context of a person's life. Awareness of this connection allows one not to blame the partner for sudden coldness but to look for the cause outside and give the relationship time to recover.
