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November 25, 2025 36 mins

Consensual non-monogamy (CNM) is something everyone seems to have an opinion on, but many people’s views are decidedly negative. For example, people often say things like “open relationships never work,” and “how is that any different than cheating?” In today’s show, we’re going to dive into common CNM myths and misconceptions and separate fact from fiction.

My guest is Dr. Justin Mogilski, an associate professor of psychology at the University of South Carolina Salkehatchie, where he teaches courses on human sexuality, the psychology of marriage, and evolutionary psychology.

Some of the specific topics we explore in this episode include:

  • What the difference between CNM and infidelity?
  • How is cheating within a CNM relationship similar to or different from cheating in a monogamous relationship?
  • What are some of the logistical and emotional challenges in CNM relationships?
  • What are some of the key components to a successful CNM relationship?
  • How is CNM related to sexual health and safer-sex practices?

You can click this link to read Dr. Mogilski’s large-scale study on consensual non-monogamy.

Got a sex question? Send me a podcast voicemail to have it answered on a future episode at speakpipe.com/sexandpsychology.

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Want to learn more about Sex and Psychology? Click here for previous articles or follow the blog on FacebookTwitter, or Bluesky to receive updates. You can also follow Dr. Lehmiller on YouTube and Instagram.

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Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.

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