What 40 Years of Research Actually Says About Open Relationships (and why your fears are unfounded)
You haven't said it out loud. Not to your partner, not to your closest friend, maybe not even fully to yourself.
But you've thought it.
In the shower. At 2am. After a conversation with your partner that didn't go where you wished it would.
What if we opened things up?
And then, instantly, the fears flood in.
It'll destroy what we have. One of us will fall in love with someone else. The kids will end up in therapy. We'll become one of those couples on Reddit. People will pity me. I'll lose control.
According to the research, you're over reacting.
These fears feel like wisdom. They feel like the responsible adult in your head protecting your beautiful, hard-won relationship from a reckless decision.
Here's the uncomfortable truth: almost none of them are supported by the actual research.
What four decades of studies actually show
Researchers have been studying consensual non-monogamy (CNM) for a long time. The data is now substantial, peer-reviewed, and remarkably consistent. Let me walk you through it.
Fear: "It will destabilize our relationship." A widely-cited meta-analysis published in the Journal of Sex Research found no significant difference in relationship satisfaction, commitment, or psychological well-being between people in monogamous and consensually non-monogamous relationships (Conley et al., 2017). CNM couples weren't more anxious, less attached, or less in love. They were, statistically, doing just as well.
Fear: "Our sex life will suffer." The opposite. Research in Perspectives on Psychological Science found that CNM couples report higher sexual satisfaction, more communication about desire, and more frequent safer-sex practices than monogamous couples (Conley et al., 2018). The acts of negotiating, asking, and being explicit about what you want — which CNM forces — turn out to be very good for the home bedroom.
Fear: "We'll be the weird ones nobody understands." A 2017 study found that over 1 in 5 Americans have engaged in some form of CNM at some point in their lives (Haupert et al., 2017). That's roughly the same percentage as people who own cats. You are not the freak. You are the demographic.
Fear: "It'll all fall apart eventually." Longitudinal research finds that CNM relationships have comparable longevity and breakup rates to monogamous ones (Rubel & Bogaert, 2015). Some last decades. Some end. Same as every other kind of relationship. Structure isn't what predicts whether love endures — skill is.
What the data doesn't say
It does not say that CNM is better than monogamy. It says structure isn't the variable that determines whether a relationship thrives.
Monogamous couples with strong communication, emotional honesty, and mutual respect do well. CNM couples with the same skills do equally well. Couples in either structure who lack those skills struggle.
That's the actual finding. Not "open relationships are superior." Just: you've been told there's a stability gap, and there isn't one.
Why this matters for you
The fear you're carrying isn't crazy. It's learned. It came from a culture that only tells stories about CNM when it goes wrong, while ignoring the millions of couples quietly thriving in their kitchens, at their kids' soccer games, at dinner parties looking entirely unremarkable.
You're not choosing chaos. You're considering a structure with the same research-backed outcomes as the one you're currently in — and in some categories, better ones.
The question isn't whether it works.
The question is whether you can build it well.
That's the part that takes skill — and that's exactly what I help people with. If you're sitting with this and want to talk it through with someone who's lived it for nearly 14 years, [Book a curiosity call here].
You don't have to figure this out alone, and you don't have to figure it out fast. You just have to stop letting fears that aren't backed by anything keep you from a conversation that might change everything.