Causes of Divorce in a Couple

Maybe you’re lying awake next to someone you once couldn’t imagine your life without, running through the same argument you’ve had a dozen times, wondering at what exact point the connection started slipping away without either of you fully noticing. Or perhaps you’re already separated, replaying the final months on a loop, desperate to understand whether the ending was inevitable or whether some different choice, some braver conversation, might have changed everything. There’s a particular kind of grief in watching a relationship you invested years into quietly unravel, especially when you can point to no single dramatic betrayal, just an accumulation of small disappointments that eventually became unbearable. Understanding the real causes of divorce won’t undo what’s already happened, but it can offer something equally valuable: clarity about what actually breaks marriages, so future relationships, or even a current one worth fighting for, don’t have to repeat the same pattern.

This search for understanding matters because divorce rarely stems from one clean, singular cause, even though people often settle on a simplified story afterward, usually one that places more blame on their former partner than on themselves. Research on relationship dissolution consistently finds that couples describe a slow accumulation of unresolved conflict, emotional distance, and broken trust rather than one isolated event, even when a specific incident like infidelity eventually becomes the breaking point. This distinction matters enormously in daily life, since couples who understand the underlying patterns driving their disconnection have a genuinely better chance at repair than those stuck arguing about surface-level symptoms without addressing the deeper dynamic underneath. Left unexamined, these patterns tend to resurface in future relationships too, since the underlying communication habits and emotional wounds rarely resolve simply by ending one particular partnership.

So what does the research actually reveal about why marriages fail?

This article examines the most common causes of divorce in a couple, drawing on decades of relationship research, so you can recognize warning signs and understand what genuinely predicts separation.

What Do Divorced Couples Actually Say Caused Their Split?

When researchers directly ask divorced individuals why their marriage ended, the most consistently reported reasons include infidelity, incompatibility, lack of commitment, and excessive conflict. These findings appear remarkably consistent across multiple studies spanning different decades and populations.

Sociologists Paul Amato and Denise Previti conducted a widely cited study asking divorced individuals directly what caused their split, finding that infidelity, incompatibility, substance use, and growing apart topped the list of reported reasons. Separately, family researcher Scott Stanley and colleagues found that a lack of commitment consistently ranked as the most commonly cited cause across multiple large surveys, often outranking even infidelity as the primary driver behind marital breakdown. Interestingly, Stanley’s research also revealed that most divorced people, roughly seventy percent in some surveys, believe they personally worked hard enough on the marriage while believing their former spouse should have tried harder, a pattern that reveals how differently partners often experience the same failing relationship.

It’s worth distinguishing between the underlying causes that gradually erode a marriage and the specific “final straw” that ultimately ends it. Stanley’s research found that while lack of commitment and ongoing conflict often represent the deeper, longer-term causes of marital decline, the actual final straw prompting divorce filing frequently involves a more acute event, such as discovered infidelity, domestic violence, or substance abuse. This distinction helps explain why couples sometimes seem shocked when a marriage ends over what appears to be a single incident, when in reality that incident represents the culmination of years of accumulated strain rather than an isolated cause.

How Do Communication Breakdowns Lead to Divorce?

Communication breakdown ranks among the most consistently identified predictors of divorce, particularly when couples develop specific destructive patterns during conflict. Research spanning four decades has identified exactly which communication behaviors most reliably forecast marital failure.

Psychologist John Gottman’s extensive longitudinal research identified four specific communication patterns, which he termed the “four horsemen,” that predict divorce with remarkable accuracy when they become habitual. These four patterns include criticism, attacking a partner’s character rather than addressing specific behavior; contempt, which involves mockery, sarcasm, or eye-rolling that communicates disrespect; defensiveness, where a partner deflects responsibility through counter-complaints or excuses; and stonewalling, complete emotional withdrawal from the conversation. Gottman’s research found that contempt specifically stands out as the single strongest predictor of divorce, since it actively destroys the underlying fondness and admiration that healthy relationships require to survive difficult periods.

These patterns rarely appear in isolation; Gottman’s research shows they tend to escalate in a predictable sequence, where unresolved criticism gradually hardens into contempt, which then triggers the kind of physiological flooding that produces stonewalling, ultimately convincing the pursuing partner that meaningful connection is impossible. Notably, Gottman also found that stonewalling occurs disproportionately among men, tied to physiological differences in how quickly certain nervous systems become overwhelmed during conflict, rather than reflecting less genuine care about the relationship. Recognizing these patterns early offers a real opportunity for repair, since Gottman’s research also demonstrates that couples who learn to interrupt this cycle through specific communication techniques can meaningfully improve relationship satisfaction, even after years of habitual negative patterns.

Why Does Infidelity Remain Such a Common Cause of Divorce?

Infidelity appears on nearly every major study examining reasons for divorce, though it often represents the culmination of preexisting problems rather than an isolated, unprovoked betrayal. Understanding this context helps explain why infidelity’s impact varies so significantly between different couples.

For some couples, infidelity functions as the primary and sole cause of divorce, arriving relatively unexpectedly within an otherwise reasonably functional marriage. For many others, however, research indicates that infidelity emerges after years of unaddressed conflict, emotional distance, or unmet needs, meaning the affair itself becomes a symptom of deeper problems rather than the singular root cause. This distinction matters considerably for how couples, and sometimes therapists, approach recovery, since addressing only the affair itself without examining the underlying relational patterns that preceded it often leaves the marriage vulnerable to similar breakdowns even if the couple attempts reconciliation.

Research examining “final straw” reasons for divorce consistently places infidelity near the top of acute triggering events, even among couples who report other underlying causes like growing apart or persistent conflict. This suggests that regardless of whatever deeper issues existed beforehand, the discovery of infidelity frequently accelerates a decision that might have otherwise unfolded more gradually. Rebuilding trust after infidelity, when couples choose to attempt it, generally requires sustained transparency, professional support through couples therapy, and considerable patience, since trust rebuilds incrementally rather than through a single decisive conversation or apology.

How Do Financial Problems Contribute to Marital Breakdown?

Financial strain consistently appears as a significant contributing factor to divorce, both as a direct source of conflict and as a stressor that intensifies other underlying relationship problems. Money disagreements often reflect deeper differences in values, security needs, and priorities rather than simply disagreements about numbers.

Financial problems rarely operate as a standalone cause of divorce; instead, they typically compound existing communication difficulties, since money disagreements often trigger the same criticism, defensiveness, and contempt patterns that Gottman’s research identified as broadly predictive of marital failure. A couple already struggling to discuss difficult topics productively will likely find financial stress especially corrosive, since money conversations frequently touch on deeply held beliefs about security, fairness, and control that go well beyond the literal dollar amounts being discussed. Marrying young, before either partner has fully developed independent financial habits and values, appears to compound this risk further, according to research linking early marriage with higher rates of reported incompatibility.

Addressing financial conflict constructively often requires couples to separate the practical logistics of budgeting from the deeper emotional meanings attached to money, such as security, freedom, or self-worth. Couples who approach financial disagreements as a shared problem-solving exercise, rather than a battle over who is right, tend to navigate these conflicts with considerably less relational damage. Professional financial counseling, sometimes combined with couples therapy, can help address both the practical and emotional dimensions of financial conflict simultaneously.

What Role Does Growing Apart Play in Divorce?

Growing apart, sometimes described as gradual emotional disconnection without a specific triggering incident, ranks among the most commonly cited reasons for divorce in multiple studies. This pattern often proves harder to address precisely because it lacks an obvious point of intervention.

• Diverging life goals can emerge gradually as partners pursue separate careers, interests, or personal growth paths that no longer align.
• A steady decline in shared quality time often precedes the emotional distance that couples later describe as growing apart.
• Reduced physical and emotional intimacy frequently accompanies this drift, even in the absence of overt conflict or betrayal.
• Partners may develop separate social worlds, gradually relying less on each other for companionship and support.
• A lack of ongoing curiosity about each other’s inner lives can quietly transform partners into emotional strangers over years.

Family researchers Alan Hawkins and William Doherty found that “growing apart” and “not being able to talk together” ranked as the two most common reasons cited among divorcing parents in their research, notably outranking both infidelity and financial problems in that particular sample. This finding underscores an important pattern: many marriages don’t end through dramatic rupture but through a slow, often mutual withdrawal that neither partner actively decides to pursue, yet both eventually recognize has already happened. Perhaps most concerning, this same research found that couples experiencing growing apart were among the least likely to consider reconciliation, suggesting this particular pattern, once established, tends to feel more final and less reversible than conflicts rooted in a specific, addressable incident.

How Do Unmet Expectations About Commitment Cause Divorce?

Differing or unmet expectations around commitment consistently rank among the most significant underlying causes of divorce, often outweighing more visible problems like conflict or infidelity in long-term impact. This factor speaks to deeper questions about how invested each partner genuinely feels in sustaining the relationship through difficulty.

Scott Stanley’s research on commitment theory distinguishes between what he calls “constraint commitment,” staying together due to external factors like finances, children, or social pressure, and “dedication commitment,” the genuine internal desire to build a future together regardless of external circumstances. Marriages heavily reliant on constraint commitment without corresponding dedication tend to prove far more vulnerable to divorce once those external constraints loosen or disappear, such as when children leave home or financial independence becomes possible. This helps explain why some marriages that appear stable for years suddenly dissolve once a major life transition removes the practical barriers that had been quietly holding the relationship together.

Unmet commitment expectations also frequently show up as disagreements about major life decisions, such as whether or when to have children, career sacrifices, or long-term geographic plans. Attorneys and relationship researchers have increasingly noted that conflicting family planning goals represent a growing source of marital conflict, particularly as decisions about parenthood have become less automatic and more actively negotiated than in previous generations. Couples who address these fundamental compatibility questions honestly before marriage, rather than assuming they’ll naturally align later, tend to face significantly lower risk of this particular cause of divorce.

Can Understanding These Causes Actually Help Prevent Divorce?

Understanding the research-backed causes of divorce can meaningfully help couples recognize warning signs early and take corrective action before problems become entrenched. Awareness alone won’t fix a struggling marriage, but it does provide a genuine starting point for intentional change.

1. Address communication patterns directly, learning to recognize and interrupt criticism, contempt, defensiveness, or stonewalling before they become habitual.
2. Seek couples therapy proactively, rather than waiting until problems feel insurmountable, since early intervention consistently produces better outcomes.
3. Discuss commitment and expectations openly, particularly around major life decisions like children, career priorities, and long-term goals.
4. Prioritize regular quality time, actively countering the gradual drift that often precedes the experience of growing apart.
5. Address financial disagreements as a team, separating practical budgeting decisions from the deeper emotional meanings attached to money.
6. Take personal accountability seriously, resisting the common tendency to place disproportionate blame on a partner while overlooking your own contributing patterns.

It’s worth acknowledging honestly that not every marriage should or can be saved, and choosing to divorce isn’t inherently a failure, particularly in situations involving abuse, chronic infidelity, or fundamental incompatibility that genuine effort hasn’t resolved. For couples who do want to invest in repair, working with a licensed couples therapist trained in evidence-based approaches, such as Gottman Method therapy, offers considerably better odds than attempting to address deeply ingrained patterns without professional guidance.

FAQs about Causes of Divorce in a Couple

What is the single most common cause of divorce?

Research doesn’t point to one single universal cause, since studies consistently find multiple overlapping factors, including infidelity, lack of commitment, and excessive conflict, appearing near the top across different populations and time periods. That said, family researcher Scott Stanley’s research has found that lack of commitment frequently emerges as the most commonly cited underlying reason when people are asked directly what caused their divorce, even ranking above infidelity in several major surveys. It’s important to distinguish between deeper, longer-term causes like commitment issues and the specific “final straw” that triggers the actual decision to divorce, which more often involves acute events like discovered infidelity or domestic violence. Most researchers agree that divorce typically results from an accumulation of multiple interacting factors rather than one isolated cause operating alone.

Can a marriage recover after infidelity?

Yes, many marriages do recover after infidelity, though successful reconciliation generally requires sustained effort, transparency, and often professional support through couples therapy over an extended period. Recovery tends to go more smoothly when both partners are willing to examine the underlying relational patterns that may have preceded the affair, rather than treating the infidelity as an isolated event disconnected from the broader relationship dynamic. Rebuilding trust happens gradually through consistent, demonstrated behavior over time, not through a single apology or explanation, and setbacks during this process are normal rather than a sign that recovery is impossible. Ultimately, whether reconciliation succeeds depends heavily on both partners’ genuine willingness to engage in the difficult work of rebuilding trust and addressing whatever deeper issues contributed to the breach in the first place.

Why do so many people blame their ex-spouse rather than themselves?

Research by sociologists Paul Amato and Denise Previti found that divorced individuals are considerably more likely to blame their former spouse than to attribute the divorce to their own behavior, a pattern replicated across multiple studies. This tendency likely reflects a broader psychological self-protective bias, where people naturally seek to preserve their own self-image following a painful, identity-disrupting experience like divorce. This doesn’t necessarily mean people are being dishonest; rather, it reflects how differently each partner often experiences the same failing relationship, with each person more acutely aware of their own efforts and their partner’s shortcomings than the reverse. Recognizing this bias can be genuinely useful for anyone processing a divorce, since honestly examining one’s own contributing patterns, however uncomfortable, tends to support healthier future relationships more than exclusively focusing on a former partner’s faults.

Does marrying young increase the risk of divorce?

Yes, research consistently links marrying at a younger age with higher reported rates of incompatibility as a cause of divorce, likely because people who marry young often haven’t yet fully developed a stable sense of their own values, needs, and long-term goals. Sociological research by Paul Amato and Denise Previti found that incompatibility was reported more frequently among those who married younger compared to those who married later, supporting the idea that additional life experience and self-understanding before marriage may reduce certain relationship risks. This doesn’t mean every young marriage is destined to fail, since many factors, including relationship skills, communication patterns, and external support, also significantly influence long-term outcomes regardless of age at marriage. Couples marrying young may benefit particularly from premarital education programs that help clarify expectations and strengthen communication skills before committing long-term.

What is “growing apart,” and why is it so hard to prevent?

Growing apart describes a gradual, often mutual emotional disconnection between partners that develops over time without necessarily involving a specific conflict, betrayal, or triggering incident. This pattern proves particularly difficult to address because it lacks an obvious moment of crisis that might otherwise prompt a couple to seek help; instead, it unfolds so slowly that both partners may fail to recognize the drift until significant emotional distance has already developed. Research by family scholars Alan Hawkins and William Doherty found that couples citing growing apart as their reason for divorce were among the least likely to consider reconciliation, suggesting this pattern feels particularly final once established. Preventing this drift generally requires proactive, ongoing effort, such as regularly prioritizing quality time and maintaining genuine curiosity about a partner’s evolving inner life, rather than waiting for problems to surface before addressing connection.

How can couples therapy help address the causes of divorce before it’s too late?

Couples therapy, particularly evidence-based approaches like Gottman Method therapy, can help partners identify destructive communication patterns, rebuild emotional connection, and address underlying issues like commitment ambiguity or unresolved conflict before they become irreversible. A skilled therapist can help couples recognize patterns like the four horsemen identified in John Gottman’s research, offering specific, research-backed techniques to interrupt criticism, contempt, defensiveness, and stonewalling before these patterns fully erode the relationship. Therapy also provides a structured, neutral space to address sensitive topics, such as financial disagreements or differing expectations about children, that couples often struggle to discuss productively on their own. While therapy cannot guarantee every marriage will be saved, particularly in cases involving abuse or chronic dishonesty, research consistently shows that couples who seek professional support early, before resentment becomes deeply entrenched, generally experience significantly better outcomes than those who wait until the relationship feels nearly unsalvageable.

Bibliography

• Gottman, J. M., & Silver, N. (1999). The Seven Principles for Making Marriage Work. Harmony Books.
• Amato, P. R., & Previti, D. (2003). People’s Reasons for Divorcing. Journal of Family Issues, 24(5), 602-626.
• Stanley, S. M. (2017). Reasons People Give for Divorce. Institute for Family Studies.
• Scott, S. B., Rhoades, G. K., Stanley, S. M., Allen, E. S., & Markman, H. J. (2013). Reasons for Divorce and Recollections of Premarital Intervention. Couple and Family Psychology: Research and Practice, 2(2), 131-145.
• Hawkins, A. J., Willoughby, B. J., & Doherty, W. J. (2012). Reasons for Divorce and Openness to Marital Reconciliation. Journal of Divorce and Remarriage, 53(6), 453-463.
• Johnson, C. A., Stanley, S. M., Glenn, N. D., Amato, P. A., Nock, S. L., Markman, H. J., & Dion, M. R. (2002). Marriage in Oklahoma: 2001 Baseline Statewide Survey on Marriage and Divorce. Oklahoma Department of Human Services.
• American Psychological Association. (2023). Marriage and Divorce. APA.org.