No one can say with 100% certainty that a couple is heading for disaster.
But social scientists have gotten pretty good at predicting who's most likely to wind up there. These couples share certain commonalities — in the way they fight and the way they describe their relationship, but also in their education level and employment status.
Below, Business Insider has rounded up seven factors that predict divorce.
Getting married in your teens or after age 32
The best time to get married is when you feel ready, and when you've found someone you think you can spend a lifetime with. Don't force anything — or put it off — because a study told you to do so.
That said, research does suggest that couples who marry in their teens and couples who marry in their mid-30s or later are at greater risk for divorce than couples in their late 20s and early 30s. The risk is especially high for teenage couples.
That's according to research led by Nicholas Wolfinger, a professor at the University of Utah. After age 32, Wolfinger found, your odds of divorce increase by about 5% every year.
As Wolfinger wrote in a blog post for the conservative-leaning Institute for Family Studies, "For almost everyone, the late twenties seems to be the best time to tie the knot."
Other research, published in 2015 in the journal Economic Inquiry, found that the odds of divorce among heterosexual couples increase with the age gap between spouses.
"A one-year discrepancy in a couple's ages, the study found, makes them 3% more likely to divorce (when compared to their same-aged counterparts); a 5-year difference, however, makes them 18% more likely to split up. And a 10-year difference makes them 39% more likely."
Having a husband who doesn't work full-time
A 2016 Harvard study, published in the American Sociological Review, suggests that it's not a couple's finances that affect their chances of divorce, but rather the division of labor.
When the researcher, Alexandra Killewald, looked at heterosexual marriages that began after 1975, she learned that couples in which the husband didn't have a full-time job had a 3.3% chance of divorcing the following year, compared to 2.5% among couples in which the husband did have a full-time job.
Wives' employment status, however, didn't much affect the couple's chances of divorce.
The researcher concludes that the male breadwinner stereotype is still very much alive, and can affect marital stability.