The Love Hypothesis

· The Love Hypothesis Book 1 · Sold by Penguin
544 reviews
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About this ebook

Now a Prime Original Movie • The Instant New York Times Bestseller and TikTok Sensation!

When a fake relationship between scientists meets the irresistible force of attraction, it throws one woman's carefully calculated theories on love into chaos.


As a third-year Ph.D. candidate, Olive Smith doesn't believe in lasting romantic relationships—but her best friend does, and that's what got her into this situation. Convincing Anh that Olive is dating and well on her way to a happily ever after was always going to take more than hand-wavy Jedi mind tricks: Scientists require proof. So, like any self-respecting biologist, Olive panics and kisses the first man she sees.

That man is none other than Adam Carlsen, a young hotshot professor—and well-known ass. Which is why Olive is positively floored when Stanford's reigning lab tyrant agrees to keep her charade a secret and be her fake boyfriend. But when a big science conference goes haywire, putting Olive's career on the Bunsen burner, Adam surprises her again with his unyielding support and even more unyielding...six-pack abs.

Suddenly their little experiment feels dangerously close to combustion. And Olive discovers that the only thing more complicated than a hypothesis on love is putting her own heart under the microscope.
Now a Prime Original Movie • The Instant New York Times Bestseller and TikTok Sensation! When a fake relationship between scientists meets the irresistible force of attraction, it throws one woman's carefully calculated theories on love into chaos. As a third-year Ph.D. candidate, Olive Smith d...

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Ratings and reviews

544 reviews
nick
December 21, 2025
I love Olive, she is such a cool interesting person, I love dip into world of Uni. science & research, it’s fun to get a glimpse into a world u know nothing about. BUT I don’t like Adam! He is a jerk, arguing that his abrasive approach to critiquing Grad students is for the best! I don’t agree! Love of any subject is one of most important things to bring good wk (see Lane Hutson) so critiquing & encouraging will have better results, since it will encourage students love of the subject!
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Peggy Nibte
August 2, 2026
Ik heb enorm genoten van the love hypothesis. Het verhaal is vlot geschreven, zit vol humor en leest heerlijk weg. De chemie tussen de hoofdpersonen is geloofwaardig en de grappige dialogen zorgden ervoor dat ik regelmatig moest lachen. Het is een romantisch verhaal met leuke, herkenbare momenten en precies genoeg diepgang om je betrokken te houden. Een echte aanrader!
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Viktoria Cejas
March 4, 2022
I found this book through TikTok and I had high expectations of it and it did deliver but not as much as I needed. First off, I'll talk about the things I loved. Representation of women in STEM (duh) the main character's love for her friends and what she does, the build-up of the relationship. These were all redeeming qualities and I still did feel butterflies in my stomach but I couldn't get over how it didn't feel realistic enough. Did I scream? Yes, ofc (esp with him caring for her). Do I like the characters? Yes, ofc but I feel like it could have been so much MORE. I can't wait to read the other books coming up so I can compare because I absolutely loved the writing style, it was very vivid and I'm a sucker for an enemies-to-lovers trope but I still liked the book. It's definitely worth a read
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About the author

Ali Hazelwood is the #1 New York Times bestselling author of Love, Theoretically and The Love Hypothesis, as well as a writer of peer-reviewed articles about brain science, in which no one makes out and the ever after is not always happy. Originally from Italy, she lived in Germany and Japan before moving to the US to pursue a PhD in neuroscience. When Ali is not at work, she can be found crocheting, eating cake pops, or watching sci-fi movies with her three feline overlords (and her slightly-less-feline husband).
Ali Hazelwood is the #1 New York Times bestselling author of Love, Theoretically and The Love Hypothesis, as well as a writer of peer-reviewed articles about brain science, in which no one makes out and the ever after is not always happy. Originally from Italy, she lived in Germany and Japan befo...

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