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Feb 23, 2026

9 Unexpected Things That Show a Marriage Won’t Last Long

All people want that love of a lifetime, but practice shows that this kind of scenario is a rare exception to a harsh reality. In 2017 in Europe, there were about 2 divorces per 1,000 people. The good thing is that foreseeing a divorce is possible, and it’s backed up by scientific research.

We at Bright Side hope that there will be more happy and strong families in the world. That’s why we studied a bunch of research and chose the 9 most distinct divorce forerunners that scientists have spotted.

1. The number of smiles in their childhood photos

Psychologists conducted a series of tests to try to understand whether it is possible to predict divorce from childhood and youthful photos. In one study, scientists looked at pictures from a college yearbook and rated the intensity of smiles on a scale of 1 to 10. The assessment was based on the stretching of 2 muscles: one tightened the mouth and the other created wrinkles around the eyes.

None of those whose smiles were rated a “10” divorced. At the same time, every fourth person got divorced among the frowners. In general, results show that people who look gloomy in photos get divorced 5 times more often than those who smile.

2. The emotional tone of their voice

A computer algorithm can predict the success of a marriage, with an accuracy of 79%, using only the tone of the spouses’ voices when communicating with each other. Scientists analyzed the conversations of more than 100 couples who were seeing a psychologist and then watched their marital status for 5 years.

It turns out the intensity, pitch, “jitter,” and “shimmer” can indicate strong emotions. “What you say is not the only thing that matters, how you say it is also very important. Our study confirms that this holds for a couple’s relationship as well,” scientists say.

3. Colleagues of the opposite sex

According to Danish researchers, people who work mostly surrounded by members of the opposite sex get divorced 15% more often. The study of this issue arrived on a larger scale when they studied all the couples who got married from 1981 to 2002 in Denmark. They found that 100,000 of them have already gotten divorced.

4. Mother’s upbringing

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