Ali Hazelwood

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).

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Books:

The Two-Body Problem

Romance
Berkley
February 2027
ISBN 9798217195787
Hardcover, 496 pages

The Love Hypothesis (Prime Tie-In)

Romance
Penguin Group
September 2026
ISBN 9798217195633
Paperback, 417 pages

SOON TO BE A PRIME ORIGINAL FILM! • Ali Hazelwood’s swoony instant New York Times bestselling novel—now in a beautiful movie tie-in edition featuring: • All-new foreword from Lili Reinhart • A cover with exclusive movie art • Adorable art printed inside the front and back covers • Both bonus chapters from Adam’s perspective A fake relationship between scientists meets the irresistible force of attraction. 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. More/less