The Secrets That Quietly Break Marriages — And why precommitment therapy helps
Over the years, I’ve sat with more couples than I can count in the aftermath of a hidden addiction coming out — a drinking problem that had been minimized for years, a pornography habit that had quietly become compulsive, a pattern of behavior that eventually led to an affair. By the time it reaches my office as a crisis, it’s rarely a surprise to the person carrying it. However, it’s almost always a surprise to their partner. And it’s that gap — between what one partner knew and what the other didn’t — that does as much damage as the behavior itself.
I want to talk about this directly, because I think it’s one of the most important and most avoided conversations about hidden addiction in premarital and precommitment work.
It’s rarely the behavior alone — it’s the secrecy
When I sit with a partner who just found out about a hidden addiction, the pain they describe isn’t only about what happened. Instead, it’s about everything that came before the discovery — the small inconsistencies they’d noticed and talked themselves out of, the trust they’d extended without knowing it was misplaced, the sense that the relationship they thought they were in wasn’t quite the one that existed.
The research on disclosure backs this up. In one of the founding studies on this topic, researchers M. Deborah Corley and Jennifer Schneider surveyed 164 people with sex addiction and their partners about the experience of disclosure. What they found was striking: even though disclosure was painful — more than half of partners said they considered leaving in the immediate aftermath — the overwhelming majority of both partners and those with addiction, over 90% in each group, still said afterward that the disclosure had been the right thing to do (Schneider, Corley, & Irons, 1998). Secrecy, not honesty, was the thing that did lasting damage. In fact, painful truth, it turns out, is something most relationships can eventually work with. A hidden one is much harder to recover from.
What the research shows about hidden addiction in marriage
Pornography. This is one I want to name directly, because I’ve watched it quietly erode more relationships than almost anything else, and it often stays hidden the longest. Sociologist Samuel Perry has published a series of longitudinal studies tracking real couples over time. His research found that pornography use predicted lower marital quality years later, even after accounting for how happy the couple was to begin with (Perry, 2017). In a separate study following married couples over a six-year period, pornography use in the first year predicted a greater likelihood of separation later on — again, independent of how satisfied the couple reported being with their marriage or their sex life at the start (Perry & Longest, 2019). In other words, this isn’t simply a symptom of a relationship that was already struggling. Instead, it appears to be a contributing cause in its own right.
Alcohol and substance use. A large study using data from the Collaborative Study on the Genetics of Alcoholism followed thousands of individuals and found that alcohol use disorder was associated with a significantly increased risk of divorce, independent of other psychiatric conditions like depression (Thomas et al., 2022). This tracks with decades of other research showing the same pattern. When substance use becomes disordered, it doesn’t just affect the person carrying it — it reshapes trust, predictability, and safety for the whole relationship.
Why hidden addiction belongs in premarital and precommitment counseling
I bring this up early, before marriage or before a couple has fully merged their lives, for a simple reason: these patterns are almost never new by the time a couple gets engaged. They usually started years earlier, often before the relationship began. Therefore, what premarital and precommitment counseling offers is a structured, non-shaming space to name them on purpose — not as an accusation, but as an act of honesty that the relationship deserves before it’s built on anything hidden.
This isn’t about interrogating your partner or assuming the worst. It’s about creating room for questions that are hard to bring up on your own:
- Is there anything about your relationship with alcohol, drugs, or pornography that you’ve minimized to yourself or hidden from your partner?
- Have you ever made a promise to change a pattern and quietly broken it more than once?
- Is there a behavior you’d be devastated for your partner to discover after the wedding, rather than before it?
These aren’t comfortable questions. That’s exactly why they belong in a room with a trained third person, before the stakes of marriage or a shared life make them even harder to raise.
Secrecy does more damage than the struggle itself — honesty, even when it’s hard, is what relationships can work with.
The goal isn’t a perfect past — it’s an honest one
I want to be clear about something: having struggled with a hidden addiction doesn’t disqualify anyone from a healthy marriage or a healthy committed partnership. Plenty of people carry a history here and go on to build something strong and lasting. What predicts trouble isn’t the struggle itself — it’s the secrecy around it. Additionally, it depends on whether both partners are actually working from the same information about what they’re building together.
That’s the whole purpose of doing this work early. Not to dig up shame, but to make sure nothing essential is still hidden by the time you make your commitment — whatever form that commitment takes.
If Something Feels Unfinished Here
If reading this brought something up — a question you’ve been avoiding, or a secret you’re not sure how to bring into the open — you don’t have to navigate that conversation alone.
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Sources
- Schneider, J. P., Corley, M. D., & Irons, R. R. (1998). Surviving disclosure of infidelity: Results of an international survey of 164 recovering sex addicts and partners. Sexual Addiction & Compulsivity, 5(3), 189–217.
- Perry, S. L. (2017). Does viewing pornography reduce marital quality over time? Evidence from longitudinal data. Archives of Sexual Behavior, 46(2), 549–559.
- Perry, S. L., & Longest, K. C. (2019). Till porn do us part? A longitudinal examination of pornography use and divorce. Journal of Sex Research, 56(7), 895–906.
- Thomas, N. S., Kuo, S. I-C., Aliev, F., et al. (2022). Alcohol use disorder, psychiatric comorbidities, marriage and divorce in a high-risk sample. Psychology of Addictive Behaviors, 36(4), 364–374.
Next in this series: The Rise of Online Sports Betting — And Why Gambling Belongs in This Conversation Too →