Marriage is often seen as the ultimate celebration of love and partnership, but not all unions are built to stand the test of time. While every couple hopes for happily-ever-after, research shows that some marriages might be doomed from the start. Surprisingly, there are science-backed signs that can predict potential trouble in paradise. Let’s uncover nine unexpected indicators that suggest a marriage might not go the distance.

Childhood Smiles May Predict Marital Success

Have you ever considered that your childhood photos might hold clues about your future relationships? Psychologists conducted studies analyzing the intensity of smiles in college yearbook photos. They rated smiles on a scale of 1 to 10 based on muscle movements, such as those around the mouth and eyes.

The findings were striking—none of the individuals with the highest-rated smiles divorced, while one in four of those with gloomy expressions did. In fact, people who appeared less happy in their photos were five times more likely to experience divorce. A genuine smile reflects a positive and optimistic personality, qualities that can strengthen a marriage over time.

The Emotional Tone of Conversations

What you say to your spouse matters, but how you say it might matter even more. Scientists developed an algorithm to analyze vocal tones and predict the likelihood of marital success. They studied over 100 couples and found that the intensity, pitch, and even subtle variations in tone—like jitter and shimmer—could reveal emotional undercurrents in the relationship.

The results were eye-opening. With an accuracy of 79%, the study concluded that strained or irritated tones often signal unresolved frustrations, whereas calm and loving tones reflect a healthier connection. It’s not just about words; your voice conveys your emotional state.

Working With Opposite-Gender Colleagues Can Be Risky

Could your workplace impact your marriage? Danish researchers explored this question and found that individuals working closely with colleagues of the opposite gender were 15% more likely to divorce. The study analyzed data from marriages between 1981 and 2002, discovering that 100,000 couples ended their unions during this period.

While this doesn’t mean working with opposite-gender colleagues dooms a marriage, the potential for emotional or romantic distractions increases. Maintaining clear boundaries and prioritizing your relationship can help mitigate these risks.

The Influence of Your Mother’s Behavior

We often inherit more than just physical traits from our parents—we pick up behavioral patterns, too. Studies show that adult children tend to mimic their mothers’ relationship habits. If a mother experienced multiple relationships or divorces, her children are more likely to follow a similar path.

This pattern highlights the importance of breaking generational cycles. While your upbringing shapes you, being conscious of these tendencies can help you build a stronger, healthier relationship.

Avoiding Conflict Isn’t a Peaceful Solution

Many couples think avoiding conflict will keep the peace, but this strategy often backfires. Renowned psychologist John Gottman identified four major predictors of divorce: contempt, defensiveness, criticism, and stonewalling. Among these, stonewalling—or avoiding conflict—is particularly damaging.

When one partner consistently avoids addressing issues, frustrations build up over time. Healthy arguments, though uncomfortable, are necessary for resolving problems and strengthening communication. Ignoring conflicts only creates a ticking time bomb in the relationship.

Negative Opinions About Your Partner’s Friends

Friendships play a crucial role in our lives, but when a spouse disapproves of their partner’s friends, it can spell trouble. Researchers studied 373 couples over 16 years and found that husbands who criticized their wives’ friends during the first year of marriage were more likely to end up divorced.

This tension arises because women often rely on their friendships for emotional support. Disrespecting those connections can create resentment and strain the marriage. Respecting each other’s support systems is essential for long-term success.

Over-the-Top Affection in the Beginning

You’d think newlyweds showing excessive affection would be a good sign, right? Not necessarily. Psychologist Ted Huston conducted a 13-year study and found that couples who displayed intense affection in the early years of marriage were more likely to divorce within seven years.

Why? Relationships that start with a “Hollywood romance” often set unrealistic expectations. Maintaining that level of intensity is unsustainable, leading to disappointment. Couples with steadier, more balanced beginnings tend to build stronger, lasting connections.

Financial Struggles Create Marital Stress

Money isn’t everything, but financial problems can be a major source of stress in a marriage. Poverty and unemployment significantly increase the likelihood of divorce. When financial strain builds, couples often face arguments, feelings of inadequacy, and a breakdown in communication.

To overcome these challenges, couples need to work as a team. Open conversations about budgeting, shared goals, and future planning can help alleviate financial pressure and foster trust.

Sharing a Narrow Bed Impacts Emotional Health

Sleep might not seem like a big deal, but it plays a critical role in a happy marriage. Researchers found that poor sleep quality can lead to irritability, reduced intimacy, and emotional distance. Sharing a narrow bed, or sleeping in an environment that disrupts rest, can harm the relationship.

Interestingly, 30-40% of couples sleep in separate beds, and this arrangement often improves their overall marital satisfaction. Prioritizing quality sleep—whether it means upgrading to a larger bed or sleeping apart—can make a big difference in maintaining a strong connection.

Conclusion: Building a Marriage That Lasts

Marriage is a partnership that requires effort, understanding, and adaptability. From the smiles in childhood photos to the tone of your voice, even the smallest details can offer insights into a couple’s future. Recognizing these unexpected signs isn’t about predicting failure; it’s about identifying areas to strengthen and improve.

By addressing these potential pitfalls early, couples can create a solid foundation for a happy, lasting marriage. Remember, it’s not the grand gestures that sustain love—it’s the everyday acts of kindness, patience, and commitment that truly matter.