
Non-Monogamy, Exclusivity Agreements & Regulating Sexual Jealousy - Justin Mogiliski
Chris Williamson (host), Justin Mogilski (guest)
In this episode of Modern Wisdom, featuring Chris Williamson and Justin Mogilski, Non-Monogamy, Exclusivity Agreements & Regulating Sexual Jealousy - Justin Mogiliski explores inside Consensual Non-Monogamy: Jealousy, Mate Value, And Maintenance Rules Chris Williamson interviews evolutionary psychologist Justin Mogilski about the rise, psychology, and practicalities of consensual non‑monogamy (CNM), especially polyamory. They discuss prevalence rates, sex differences in motives and jealousy, and why CNM so often fails compared with straightforward monogamy. A major focus is Mogilski’s “multi‑relationship maintenance strategies” research, outlining concrete practices like attraction disclosure, jealousy regulation, and partner hierarchy that help CNM function. They also explore social stigma, fears about harems and inequality, and how insights from CNM might improve monogamous relationships as well.
Inside Consensual Non-Monogamy: Jealousy, Mate Value, And Maintenance Rules
Chris Williamson interviews evolutionary psychologist Justin Mogilski about the rise, psychology, and practicalities of consensual non‑monogamy (CNM), especially polyamory. They discuss prevalence rates, sex differences in motives and jealousy, and why CNM so often fails compared with straightforward monogamy. A major focus is Mogilski’s “multi‑relationship maintenance strategies” research, outlining concrete practices like attraction disclosure, jealousy regulation, and partner hierarchy that help CNM function. They also explore social stigma, fears about harems and inequality, and how insights from CNM might improve monogamous relationships as well.
Key Takeaways
Consensual non-monogamy is no longer fringe, but still selective.
Around 20% of Americans will try some form of CNM, with 5–10% maintaining it; people higher in openness to experience, LGBTQ+ identities, and unrestricted sociosexuality are overrepresented, but personality differences beyond openness are modest.
Get the full analysis with uListen AI
Men and women pursue CNM for different, partially predictable reasons.
Men report slightly more interest in CNM, often for increased sexual opportunity, while women are more cautious about commitment loss but may be drawn to polyamory’s multiple emotional bonds, support networks, and potential cooperative childcare.
Get the full analysis with uListen AI
Mate value asymmetries shape both desire for CNM and jealousy expectations.
Preliminary data show higher‑mate‑value partners are more interested in opening relationships and expect to feel less jealousy, partly because they feel more secure in keeping their partner and more confident in attracting alternatives.
Get the full analysis with uListen AI
Non-monogamy fails easily when third‑party effects are ignored.
Adding partners multiplies coordination problems, rivalry, resource competition, and jealousy; CNM relationships often break down when people focus on their own gains and underestimate how new partners alter existing dynamics.
Get the full analysis with uListen AI
Specific maintenance strategies strongly predict relationship quality in CNM and mono relationships.
Practices like attraction disclosure, jealousy regulation, clear (and revisited) agreements, thought‑through partner hierarchy, shared sexual health norms, and deliberate resource distribution correlate with higher satisfaction and lower conflict—even among monogamous couples.
Get the full analysis with uListen AI
Honest communication about attraction and jealousy outperforms secrecy and avoidance.
Avoidance and suppression of jealousy are linked to worse outcomes; cognitive reframing (focusing on potential benefits) and openly discussing jealous feelings help partners correct catastrophic mental simulations and reduce conflict.
Get the full analysis with uListen AI
Stigma and secrecy around CNM create secondary harms beyond jealousy.
Because CNM is stigmatized, many hide partners from friends and family, which blocks key relationship milestones (public acknowledgment, social integration) and is associated with lower satisfaction; improving “branding” may require publicizing the structured, ethical side of CNM rather than only its sexual aspects.
Get the full analysis with uListen AI
Notable Quotes
“When you add in a third person or more, there's a unique dynamic that opens up where now you have to take into account how this third person is going to contribute to each person's life.”
— Justin Mogilski
“The vacuum sucks in speculation, and by filling the vacuum with transparency, the speculation doesn't happen so much.”
— Chris Williamson
“Jealousy is meant to preserve pair bonds, but there is jealousy that can actually make the relationship worse if it's chronic or misapplied.”
— Justin Mogilski
“There isn't really a playbook for how to do consensual non‑monogamy in a way that's ethical or in a way that doesn't potentially harm somebody.”
— Justin Mogilski
“The current paradigm is be monogamous. It's the equivalent of abstinence‑only education. This is more like teaching safe sex for having multiple relationships.”
— Justin Mogilski
Questions Answered in This Episode
How would you personally distinguish between jealousy that is adaptive and jealousy that is purely destructive in a relationship?
Chris Williamson interviews evolutionary psychologist Justin Mogilski about the rise, psychology, and practicalities of consensual non‑monogamy (CNM), especially polyamory. ...
Get the full analysis with uListen AI
Which of the nine relationship maintenance strategies do you think monogamous couples should adopt first, and why?
Get the full analysis with uListen AI
How might dark personality traits like narcissism or psychopathy specifically manifest in non-monogamous setups compared to monogamous ones?
Get the full analysis with uListen AI
Do you think widespread acceptance of CNM would meaningfully change mate competition and inequality, or would most people still default to serial monogamy?
Get the full analysis with uListen AI
What kinds of longitudinal or experimental studies are most urgently needed to test whether CNM practices genuinely improve relationship outcomes over time?
Get the full analysis with uListen AI
Transcript Preview
Just how popular is consensual non-monogamy getting at the moment?
Well, it's much... I think in some ways it's much more popular than it was before. If you look at some of the stats that exist, looking at, um, large national samples, uh, we have the best data for the United States. It's something about one in five people are at least going to try it, and then those who stick with it, something like 5 to 10%. So it's, um, it's getting up there.
What do you attribute this surgence or resurgence of a different monogamy strategy to?
Well, I think... Uh, I mean, I think there are a lot of factors. One thing is, I think that, of course, within the past several hundred years, we've been developing more of... You know, individualistic societies, of course, have taken foot, people have more equal opportunities. And I think for a very long time, marriage was a system for, uh, you know, unifying families for... And marrying men to w- to women, and women may not have had many other options. Um, and so now that I think people have more options, uh, they can perhaps pursue something that's a little more, um... That may match their current motives in life. And so to the degree that people are putting off family, marriage, et cetera, to pursue, um, you know, individual pursuits, furthering your career, whatever it happens to be, I think that those motivations are more present than they've ever been, and so people may want an option to... That, that, that fits that mo- those motivations.
Mm. You mentioned there that, uh, there was some sexed differences in the freedoms that we had, at least in the recent past when it comes to-
Mm.
... relationships, dating, marriage, et cetera. Is there a sexed difference in preference for consensual non-monogamous relationships?
There is to some degree. So men are more likely to say that they want to be in a consensually non-monogamous relationships, uh, relationship, probably because the first thing you think about is more sexual opportunities, men are more likely to be thinking about sex, pursue s-, uh, at least casual sex. Um, and women tend to report less of an interest, but it's not a huge... As huge of a difference as you might guess. So there are still plenty of women who are, um... Who I think pursue consensual non-monogamy, but the motives, again, may differ between men and women.
Talk to me about the motives.
Yeah, so, uh, to the degree... So I, I know that you've had a few people on this show before looking at, um, uh, kind of the evolutionary roots of some sex differences, and one that seems to pop up is, again, men are looking for more, uh, um, casual term, casual, you know, short-term sexual relationships. And so to the degree that that is seen as, uh, an opportunity, if you ha- if you can have multiple partners, I think men are at least seeking it out. Now, whether they're having success in finding that number of partners that consensual non-monogamy could offer, that's an open question. Uh, versus women, I... Again, this is... And of course everyone's an individual, but the tendency, uh, is that women, um, are a little bit more picky. They're, they're a little more, um, interested in commitment from a partner, or at least are kind of oriented that way. And so, um, uh, to the degree that they kind of act on that, uh, y- you might find that they're less interested in this, "Well, if you have multiple partners, are you really going to be sticking around and investing in me as much as, say, um, other in- other people?" But at the same time, I think women have a lot to potentially gain from something like consensual non-monogamy, especially polyamory, uh, where there's an emphasis on multiple emotional close bonds. And so to the degree that having multiple partnerships could, um, you know, provide opportunities for, for, uh, kind of emotional connections, support, uh, uh, you know, a, a support network, um, as well as, you know, down the line perhaps childcare, um, I think that it can be attractive. But at the get-go, at least those who report they're interested in it, we're seeing that sex difference, and I think that's why.
Install uListen to search the full transcript and get AI-powered insights
Get Full TranscriptGet more from every podcast
AI summaries, searchable transcripts, and fact-checking. Free forever.
Add to Chrome