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Why do we fall in and out of love so quickly? Why does love feel intoxicating at first, but complicated over time? The answer may be simpler than we think: humans are animals. Our brains were shaped by ancient mating systems that developed long before dating apps and modern culture. So what does it mean to be an “intimate animal?” And how much of our love lives today are still being driven by our evolutionary past?

My guest is Dr. Justin Garcia, evolutionary biologist and Executive Director of the Kinsey Institute at Indiana University. He is the chief scientific advisor for Match, and author of the new book The Intimate Animal: The Science of Sex, Fidelity, And Why We Live and Die For Love.

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

• What makes intimacy such a defining part of our species?
• Are humans built for monogamy or non-monogamy?
• What happens inside the brain when we fall in love with someone?
• Why does navigating sex and relationships in the modern world feel so challenging?

To learn more about Dr. Garcia, follow @drjustingarcia on the socials.

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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Thank you to our sponsors! 

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