Sex and Psychology Podcast

Step into the sex lab

The Sex and Psychology Podcast, hosted by Kinsey Institute Research Fellow Dr. Justin Lehmiller, is here to help you understand the most important sex organ in the entire body: your brain. Each episode offers a deep dive into the psychology of sex and relationships, drawing upon expert interviews and Dr. Lehmiller’s extensive body of research. The Sex and Psychology Podcast is the sex ed you never got in school–and won’t find anywhere else. Catch up with the latest episodes below, and subscribe on your favorite podcast platform to keep up to date.

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Latest Episodes

December 9, 2025

Episode 456: The Psychology Of Gay Men’s Sexual Fantasies

Although gay men are often seen as being pretty uninhibited when it comes to sex, their fantasy lives tell a more complex story. Like everyone else, many gay men experience shame, confusion, or conflict around their fantasies. In today’s show, we’re diving into common themes that show up in gay men’s fantasies, the psychology behind them, and how to drop the shame.

My guest is Dr. Joe Kort, the clinical director and founder of The Center for Relationship and Sexual Health in Royal Oak, Michigan. He is a board-certified clinical sexologist and author of multiple books, including Cracking the Erotic Code: Helping Gay Men Understand Their Fantasies. Some of the specific topics we explore in this episode include:
  • What do sexual fantasies actually mean or represent?
  • What kinds of things are gay men likely to fantasies about?
  • Why are taboo themes so prevalent in gay men's fantasies?
  • How does porn shape gay men's fantasies?
  • What do gay men who feel ashamed or confused about their fantasies need to know?
You can visit Joe's website to learn more about his work. Got a sex question? Send me a podcast voicemail to have it answered on a future episode at speakpipe.com/sexandpsychology. *** Thank you to our sponsors!  Firmtech's Tech Ring will help you to track your sexual health--and keep it up. Visit myfirmtech.com/justinlehmiller and use code JUSTIN15 for 15% off your purchase.  If you're ready to ditch the shady stuff and choose a libido supplement that’s effective and that you can feel confident about, it's time to check out Drive Boost.  Visit vb.health and use code JUSTIN for 10% off. The Kinsey Institute is where the world turns to understand sex and relationships. You can help continue its expert-led research by donating to the Kinsey Institute Research Fund. Learn more and make a donation here: https://give.myiu.org/centers-institutes/I380010749.html  ***

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.

Listen and stream all episodes on AppleSpotify, or Amazon. Subscribe to automatically receive new episodes and please rate and review the podcast!

Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.
Sex and Psychology Podcast
Sex and Psychology Podcast
Episode 456: The Psychology Of Gay Men's Sexual Fantasies
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December 5, 2025

Episode 455: The New Rules Of Cheating

People's definitions of cheating are evolving. Infidelity isn’t just about physical betrayal anymore. It’s emotional, it’s digital, and sometimes it doesn’t even involve another human at all. In today's show, we're diving into the new rules of cheating. We're also going to talk about how modern technology is making it harder than ever to keep infidelity a secret. I am joined once again by Dr. Amanda Gesselman a research scientist and head of the VIBES research team at the Kinsey Institute at Indiana University. Digital intimacy is a major focus of her research, including how people use tools like camsites, AI companions, dating apps, and social media to navigate connection and desire. Some of the specific topics we explore in this episode include:
  • What do people today think "counts" as cheating?
  • Is watching porn a form of infidelity? What about sexting with an AI chatbot?
  • How many people suspect a partner has cheated on them before?
  • What kind of detective work do people do to determine if a partner has cheated?
  • How do we balance the benefits and challenges of digital intimacy?
To learn more, you can read a brief report of this study here. Got a sex question? Send me a podcast voicemail to have it answered on a future episode at speakpipe.com/sexandpsychology. *** Thank you to our sponsors!  Thread & Tether is a therapy practice dedicated to helping couples rebuild trust, strengthen intimacy, and heal after betrayal. Led by AASECT-certified sex therapist Jason Powell, the practice offers virtual sessions in multiple states and in-person intensives in Boston and Manhattan. Visit threadandtether.com to learn more. Passionate about building a career in sexuality? Check out the Sexual Health Alliance. With SHA, you'll connect with world-class experts and join an engaged community of sexuality professionals from around the world. Visit SexualHealthAlliance.com and start building the sexuality career of your dreams today. ***

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.

Listen and stream all episodes on AppleSpotify, or Amazon. Subscribe to automatically receive new episodes and please rate and review the podcast!

Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.
Sex and Psychology Podcast
Sex and Psychology Podcast
Episode 455: The New Rules Of Cheating
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December 2, 2025

Episode 454: How Ozempic Is Changing Sex And Dating

Popular GLP-1 medications like Ozempic, Wegovy, and Zepbound aren't just transforming weight loss. They're also changing our intimate lives in surprising ways. In today's show, we're diving into results from a new national study finding that a majority of people taking one of these medications reported a change in their sex and dating lives, for better or for worse. My guest is Dr. Amanda Gesselman a research scientist and head of the VIBES research team at the Kinsey Institute at Indiana University. Digital intimacy is a major focus of her research, including how people use tools like camsites, AI companions, dating apps, and social media to navigate connection and desire. Some of the specific topics we explore in this episode include:
  • What specific changes are people noticing in their dating lives as a result of taking one of these drugs?
  • Why does weight loss seem to be benefiting men more than women when it comes to dating?
  • How do GLP-1 medications affect sexual health and function? And is it different for men and women?
  • Are people taking GLP-1 medications worried about social judgement?
To learn more, you can read a brief report about the study here. Got a sex question? Send me a podcast voicemail to have it answered on a future episode at speakpipe.com/sexandpsychology. *** Thank you to our sponsors!  Firmtech's Tech Ring will help you to track your sexual health--and keep it up. Visit myfirmtech.com/justinlehmiller and use code JUSTIN15 for 15% off your purchase.  The Kinsey Institute is where the world turns to understand sex and relationships. You can help continue its expert-led research by donating to the Kinsey Institute Research Fund. Learn more and make a donation here: https://give.myiu.org/centers-institutes/I380010749.html  ***

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.

Listen and stream all episodes on AppleSpotify, or Amazon. Subscribe to automatically receive new episodes and please rate and review the podcast!

Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.
Sex and Psychology Podcast
Sex and Psychology Podcast
Episode 454: How Ozempic Is Changing Sex And Dating
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November 28, 2025

Episode 453: The Secrets To A Successful Open Relationship

How do you make a non-monogamous relationship work? In today's show, we’re diving into a brand-new study that set out to map the most common and effective relationship practices for consensually non-monogamous (CNM) people. We’re going to discuss the key strategies that help people maintain multiple partners with intention, stability, and harmony. I am joined once again by 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 is the Multiple Relationships Maintenance Scale, and what can it tell us about how CNM relationships work?
  • How do people in CNM relationships navigate things like jealousy, resource distribution, and hierarchy?
  • What are people in the most successful CNM relationships doing?
  • What can monogamous couples learn from how CNM people structure their relationships?
You can click this link to read the full study discussed in this episode. Got a sex question? Send me a podcast voicemail to have it answered on a future episode at speakpipe.com/sexandpsychology. *** Thank you to our sponsors!  Wrap the ones you love in luxury with Cozy Earth. Discover bedtime bliss with Cozy Earth's bamboo sheet set and loungewear. Using code JUSTIN to get 40% off your purchase.  If you're ready to ditch the shady stuff and choose a libido supplement that’s effective and that you can feel confident about, it's time to check out Drive Boost.  Visit vb.health and use code JUSTIN for 10% off. The Kinsey Institute is where the world turns to understand sex and relationships. You can help continue its expert-led research by donating to the Kinsey Institute Research Fund. Learn more and make a donation here: https://give.myiu.org/centers-institutes/I380010749.html  ***

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.

Listen and stream all episodes on AppleSpotify, or Amazon. Subscribe to automatically receive new episodes and please rate and review the podcast!

Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.
Sex and Psychology Podcast
Sex and Psychology Podcast
Episode 453: The Secrets To A Successful Open Relationship
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November 25, 2025

Episode 452: What People Get Wrong About Open Relationships

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. *** Thank you to our sponsors!  Firmtech's Tech Ring will help you to track your sexual health--and keep it up. Visit myfirmtech.com/justinlehmiller and use code JUSTIN15 for 15% off your purchase.  Wrap the ones you love in luxury with Cozy Earth. Discover bedtime bliss with Cozy Earth's bamboo sheet set and loungewear. Using code JUSTIN to get 40% off your purchase.  If you're ready to ditch the shady stuff and choose a libido supplement that’s effective and that you can feel confident about, it's time to check out Drive Boost.  Visit vb.health and use code JUSTIN for 10% off. ***

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.

Listen and stream all episodes on AppleSpotify, or Amazon. Subscribe to automatically receive new episodes and please rate and review the podcast!

Credits: Precision Podcasting (Podcast editing) and Shutterstock/Florian (Music). Image created with Canva; photos used with permission of guest.
Sex and Psychology Podcast
Sex and Psychology Podcast
Episode 452: What People Get Wrong About Open Relationships
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Let's Collab

Want to be a guest on the Sex and Psychology Podcast, sponsor a podcast, or do you have a question or topic you want to see addressed on the podcast? Send Justin an email to start the conversation.

Email Justin