The Love Hypothesis - book cover
  • Publisher : Penguin Publishing Group
  • Published : 14 Sep 2021
  • Pages : 384
  • ISBN-10 : 0593336828
  • ISBN-13 : 9780593336823
  • Language : English

The Love Hypothesis

The Instant New York Times Bestseller!

As seen on THE VIEW!

A BuzzFeed Best Summer Read of 2021

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.

Editorial Reviews

An Indie Next Pick!

"Contemporary romance's unicorn: the elusive marriage of deeply brainy and delightfully escapist...The Love Hypothesis has wild commercial appeal but the quieter secret is that there is a specific audience, made up of all of the Olives in the world, who have deeply, ardently waited for this exact book."-Christina Lauren, New York Times bestselling author

"Funny, sexy and smart, Ali Hazelwood did a terrific job with The Love Hypothesis."-Mariana Zapata, New York Times bestselling author

"This tackles one of my favorite tropes-Grumpy meets Sunshine-in a fun and utterly endearing way...I loved the nods towards fandom and romance novels, and I couldn't put it down. Highly recommended!"-Jessica Clare, New York Times bestselling author

"Pure slow-burning gold with lots of chemistry."-Popsugar

"A beautifully written romantic comedy with a heroine you will instantly fall in love with, The Love Hypothesis is destined to earn a place on your keeper shelf."-Elizabeth Everett, author of A Lady's Formula for Love

"Smart, witty dialog and a diverse cast of likable secondary characters...A realistic, amusing novel that readers won't be able to put down."-Library Journal, starred review

"Hilarious and heartwarming, The Love Hypothesis is romantic comedy at its best...a perfect amalgamation of sex and science, sure to appeal to readers of Christina Lauren or Abby Jimenez."-Shelf Awareness

"With whip-smart and endearing characters, snappy prose, and a quirky take on a favorite trope, Hazelwood convincingly navigates the fraught shoals of academia...This smart, sexy contemporary should delight a wide swath of romance lovers."-Publishers Weekly

Readers Top Reviews

Amanda MirandaTaraAn
Did I just pay 50 bucks in my country’s currency for the kindle version of this book? Yes. Was it worth it? Absolutely. This may just be my new favorite book, maybe ever. Plot? Perfect. Characters? Perfect. The only bad thing about this book is just that it really reinforced my idea that I’ll die alone, because Dr. Adam Carlsen simply does not exist and now he is my standard for men. And Olive has my whole heart. Absolutely adorable. And the side characters too. I just wish they were real so I could be friends with them. Anyway, this is perfection in book form and if you are wondering if you should read it, do yourself a favor and go do so immediately. Seriously. You won’t regret it.
Alexandra César
Se eu pudesse apagar minha memória das últimas 24h eu iria, só pra poder ler esse livro de novo. A Ali entregou TUDO nessa comédia romântica maravilhosa que você sai apaixonada por todos os personagens. Se você é uma acadêmica, como eu, tem ainda mais probabilidade de você também amá lo
I was so excited about this book. So freakin excited for Reylo in book form. The whole time I was kind of unsure how he felt about her - their wasn’t that super intense tension/chemistry there - she always seem flustered/mentioned she might be asexual. It was weird because I was wondering “will they won’t they?” But not in a giddy fan girl way just kinda in a ‘this is kind of taking forever, she keeps lying and I can’t read him,’ way. And then wham bam. The sex scene. If ratings here are like fanfiction K-E. This is E for explicit. I had to skip chunks of it, what I did catch was cringeworthy, tasteless and just too much. I couldn’t even finish reading it. It should also include a trigger warning; as there is mention of cancer death and a sexual assault.
R. Gilbert
I have absolutely nothing against the genre whatsoever (read what you enjoy!), but I generally am not a romance novel reader; I stick mostly to nonfiction and generally assume most romance novels won't be for me as I'm not cisgender or straight. I got a facebook ad for this book and just on sheer impulse, thought: okay, I'll preorder- the premise seemed fun and I can use all the light reading I can get these days. I ended up staying up half the night to read the whole thing in one sitting, and really found myself enjoying it. It's snappy writing and pretty much purple-prose-free; I appreciated that the author was very well immersed in the protagonist's voice so nothing felt overwrought. I also just appreciated the nods at inclusivity the author made; people love rolling their eyes about those sorts of beats but actually, yeah, as I mentioned: I'm not cis, so having characters actually acknowledge that trans people may exist is nice, and I love, love, love characters who seem sexually fluid without that being some sort of obstacle or big issue to discuss. That's not a contrivance; that's my real life (in the bay area, no less!). All told I had exactly one quibble with the book itself and it's a ridiculously minor, spoiler-y plot quibble that doesn't even matter (there was one thing that I thought could have been slightly different to make Adam more compelling, but it's no big deal- I can see why the author made the choice that she did, and it was still well-done). Overall, just really fun and I'm so glad I decided to pick this up. Maybe I'm missing out and need to be reading more romance novels? I guess so!
Garrett Burke
Did I read this in 24 hours? Yes. 5/5 ⭐ (YOU'RE WRONG IF YOU THINK IT ISN'T 5 STARS) I don't even know where to begin with this one!!! But first - THIS BOOK MADE MY REYLO HEART JUMP AND SCREAM FOR JOY!! #reylostan ( shoutout to my husband for letting me leave reviews on his prime account ) This book was utterly adorable and had me giggling!! I loved the tension between these two and, well honestly... I'm slowly coming to love the grumpy/sunshine tropes!! I also REALLY loved the STEM aspect of this book!! It was SO FUN to read a book about two scientists falling in love with each other. THIS BOOK IS ABSOLUTELY ADORABLE. YOU BETTER READ IT. I'M NOT KIDDING. I promise you need this in your life!!! Be sure to check out my bookstagram,

Short Excerpt Teaser

Chapter One


Hypothesis: When given a choice between A (a slightly inconveniencing situation) and B (a colossal shitshow with devastating consequences), I will inevitably end up selecting B.

In Olive's defense, the man didn't seem to mind the kiss too much.


It did take him a moment to adjust-perfectly understandable, given the sudden circumstances. It was an awkward, uncomfortable, somewhat painful minute, in which Olive was simultaneously smashing her lips against his and pushing herself as high as her toes would extend to keep her mouth at the same level as his face. Did he have to be so tall? The kiss must have looked like some clumsy headbutt, and she grew anxious that she was not going to be able to pull the whole thing off. Her friend Anh, whom Olive had spotted coming her way a few seconds ago, was going to take one look at this and know at once that Olive and Kiss Dude couldn't possibly be two people in the middle of a date.


Then that agonizingly slow moment went by, and the kiss became . . . different. The man inhaled sharply and inclined his head a tiny bit, making Olive feel less like a squirrel monkey climbing a baobab tree, and his hands-which were large and pleasantly warm in the AC of the hallway-closed around her waist. They slid up a few inches, coming to wrap around Olive's rib cage and holding her to himself. Not too close, and not too far.


Just so.


It was more of a prolonged peck than anything, but it was quite nice, and for the life span of a few seconds Olive forgot a large number of things, including the fact that she was pressed against a random, unknown dude. That she'd barely had the time to whisper "Can I please kiss you?" before locking lips with him. That what had originally driven her to put on this entire show was the hope of fooling Anh, her best friend in the whole world.


But a good kiss will do that: make a girl forget herself for a while. Olive found herself melting into a broad, solid chest that showed absolutely no give. Her hands traveled from a defined jaw into surprisingly thick and soft hair, and then-then she heard herself sigh, as if already out of breath, and that's when it hit her like a brick on the head, the realization that- No. No.


Nope, nope, no.


She should not be enjoying this. Random dude, and all that.


Olive gasped and pushed herself away from him, frantically looking for Anh. In the 11:00 p.m. bluish glow of the biology labs' hallway, her friend was nowhere to be seen. Weird. Olive was sure she had spotted her a few seconds earlier.


Kiss Dude, on the other hand, was standing right in front of her, lips parted, chest rising and a weird light flickering in his eyes, which was exactly when it dawned on her, the enormity of what she had just done. Of who she had just-


Fuck her life.


Fuck. Her. Life.


Because Dr. Adam Carlsen was a known ass.


This fact was not remarkable in and of itself, as in academia every position above the graduate student level (Olive's level, sadly) required some degree of assness in order to be held for any length of time, with tenured faculty at the very peak of the ass pyramid. Dr. Carlsen, though-he was exceptional. At least if the rumors were anything to go by.


He was the reason Olive's roommate, Malcolm, had to completely scrap two research projects and would likely end up graduating a year late; the one who had made Jeremy throw up from anxiety before his qualifying exams; the sole culprit for half the students in the department being forced to postpone their thesis defenses. Joe, who used to be in Olive's cohort and would take her to watch out-of-focus European movies with microscopic subtitles every Thursday night, had been a research assistant in Carlsen's lab, but he'd decided to drop out six months into it for "reasons." It was probably for the best, since most of Carlsen's remaining graduate assistants had perennially shaky hands and often looked like they hadn't slept in a year.


Dr. Carlsen might have been a young academic rock star and biology's wunderkind, but he was also mean and hypercritical, and it was obvious in the way he spoke, in the way he carried himself, that he thought himself the only person doing decent science within the Stanford biology department. Within the entire world, probably. He was a notoriously moody, obnoxious, terrifying dick.


And Olive had just kissed him.


She wasn't sure how long the silence lasted-only that he was the one to break it. He stood in fro...