Get engaged in under a year and you’re statistically more likely to divorce within seven years of the wedding. Stay engaged for more than 27 months and the odds tilt against you too, just for different reasons. That’s the finding from a psychology study out of North Carolina State University, published in the Forum for Family and Consumer Issues, and it’s held up well enough that researchers keep citing it two decades later. Most couples treat their engagement length as a scheduling detail, something that bends around venue availability and family calendars. The research says it might be doing more work than anyone realizes.
Too Fast Has a Pattern
Couples who got engaged in under 12 months, according to the NC State researchers, tended to describe their relationships in the language of intense early attraction rather than tested compatibility. That’s not a moral failing, it’s a description of what early relationships often feel like, but the study links it to a higher divorce rate within the first seven years of marriage. The theory researchers point to isn’t that fast engagements are reckless by nature. It’s that a short runway to the altar leaves less time for the friction points, money habits, family dynamics, differences in how each partner handles conflict, to surface and actually get worked through before two people sign a marriage license.
Too Slow Carries Its Own Risk
The other end of the spectrum surprised a lot of people when the study came out, because conventional wisdom says more time together before marriage should only help. Engagements longer than 27 months were also tied to a steeper decline in affection during the first two years of marriage, per the same research. One explanation is that couples who linger in engagement long past the point where the relationship’s basic questions have been answered may be running on inertia rather than momentum, treating the engagement itself as a comfortable holding pattern instead of a deliberate step toward marriage. The wedding, when it finally happens, arrives after the emotional high of the engagement has already faded.
Where Modern Couples Actually Land
Today’s engagements sit closer to that lower danger zone than most people would guess. Wedding industry surveys from The Knot found the average engagement length was around 15 months in 2019, per a review compiled at Bliss and Bone, and had crept up to about 16 months by 2021. But couples who delayed weddings during the pandemic stretched their engagements to roughly 24 months on average, edging up against that 27-month threshold the NC State research flagged decades earlier without anyone in 2020 planning it that way.
It’s Not Just About the Calendar
Separate research on cohabitation timing adds another layer worth paying attention to. A report from the Institute for Family Studies found that couples who moved in together before getting engaged saw 34 percent of their marriages end, compared with 23 percent among couples who waited until engagement or marriage to cohabit, a difference researchers describe as a 48 percent higher likelihood of divorce for the pre-engagement group. The common thread across both studies isn’t that any single milestone, the ring, the move-in date, the wedding itself, guarantees anything on its own. It’s that couples benefit from making these decisions on purpose, with an actual conversation behind them, rather than sliding from one stage of the relationship into the next because it felt like the natural next step.
What Couples Can Actually Do With This
None of this is an argument for picking a wedding date based on a stopwatch. Nobody needs to propose earlier or delay a ceremony just to land inside some ideal window pulled from a study published years ago. What the research does argue for is being honest about why an engagement is running short or long. A couple engaged for six weeks because a lease is ending is in a different position than one who’s spent six weeks actually discussing finances, family expectations, and what marriage changes day to day. Likewise, a three-year engagement that’s dragged on because nobody’s addressed a real disagreement about kids or where to live is a very different situation than one that’s simply waiting on a venue’s availability. The length matters less than what two people did, or didn’t do, with the time.
An engagement length was never meant to be the single thing that predicts a marriage’s survival, and no couple should read a two-decade-old study as a verdict on their own relationship. But it turns out to be a decent proxy for something that does matter: whether two people used that stretch of time to actually know each other better, or just to plan a party.
