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Publisher's Summary

The Instant New York Times Best Seller!

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 PhD 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.

©2021 Ali Hazelwood (P)2021 Penguin Audio

What the critics say

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 best-selling author) 

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

"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

More from the same

What listeners say about The Love Hypothesis

Average Customer Ratings
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Reviews - Please select the tabs below to change the source of reviews.

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  • Overall
    5 out of 5 stars

100000/10

best book I've read all year!!! it made me laugh out loud and never want to stop reading about Adam and Olive

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    2 out of 5 stars
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    2 out of 5 stars

not to my taste, I was so hoping to like it.

the story as (far as I got) was quite amusing, full of quips and quirks I that I enjoy All in all it started off like a funny, cozy story. The narrator is quite good too.
unfortunately, where it lost me when identity politics ce into play. and I lost all interested after that. I felt as if it was pandering and not really relevant to the story. If you don't mind that, and want a quirky little read, with a god narrator then this book is for you.

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Romantic

If you’re a grad student who loves a good romance, you won’t regret downloading this book! The main character is easy to relate to and the romance will grab your attention. Highly recommend

  • Overall
    3 out of 5 stars
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    1 out of 5 stars
  • C
  • 2021-09-20

Meh

Whole story was based on a very non-believable pretence which really made the characters seem way too dumb to be academics.
Callie Dalton is a great narrator though.

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  • Overall
    5 out of 5 stars
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    5 out of 5 stars
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    5 out of 5 stars
  • Lucy C
  • 2021-09-14

Funny. Snarky. Intelligent. Real.

I devoured the book in one day (in-between family gatherings and kids). I couldn't put it down.

Then a few days later I inhaled the audiobook. GOD I adore Callie Dalton. Hands down my favorite female narrator (not an intentional nod to Mariana Zapata but I'll leave it there to honor the slow burn queen 😂)

Olive is the best kind of mess. She's frazzled from her PhD. She's grieving the loss of her mother to pancreatic cancer (which is fueling her research into easier/cheaper screening methods). She adores her friends and will do anything for them... which is how she ends up kissing Dr Adam Carlson.

Adam is the resident grump/beast - instilling fear into graduate students (but all in the name of scientific excellence, of course). He agrees to a mutually beneficial fake dating relationship with Olive after the whole kissing-incident.

Both Olive and Adam are navigating the challenges and obstacles of academia in their own unique ways - research, funding deficits, grants... i.e. lots of work, questionable returns. But science! Meanwhile juggling their fake-relationship and not at all (!!!) catching feelings.

Cancer is a near and dear topic to me (my mum died of cancer and i am currently fighting cancer) so I was gut punched during several scenes that this was discussed.

The banter and incredible one-liners in this story are perfection. Funny. Snarky. Intelligent. Real.

The relationship between each character and their individual friends is beautiful. The development of their relationship together feels *just so good*.

Read if: you're traumatized from academia and/or a STEM nerd, if you love Mariana Zapata & Helen Hoang, if you love sharp and funny banter, if you like a delicious slow burn with a fun twist on some classic tropes, if you're wild for sunshine/grumpy books.

I'm so so excited to see this book climb the bestseller list. I know its going to be (frankly it already is) a total hit.

Overall score: 5++ (this is my new bible. I will study it religiously)
Smut score: 3.5/5 (slow burn, explicit but not super kinky other than *one* thing that had me going "ohhhh" 🥵🌶)

14 people found this helpful

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    3 out of 5 stars
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  • Lynn
  • 2021-09-15

frustrating

I was looking for a light funny romance because I love a good love story and sometimes I just don't have the energy for anything heavy. This book was so frustrating because the storyline follows what happens after the F MC tells lie after lie, after lie, after lie, after lie! She was just so weak that she could never reveal the truth to the M main character. The author is smart so why give us a whimpering, indecisive lead F? There was an HEA, which I always need, but it took so long to get there, and it wasn't fulfilling.
Side note, I love this narrator and the side characters were hilarious.
Would I recommend this book? Not if I want my friends to value my book opinions.

10 people found this helpful

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  • Virginia Bosio
  • 2021-09-15

Such a frustrating plot

I wish I could enjoy this book but honestly I just felt frustrated with the characters the entire time. It had incredibly adorable scenes but the entire conflict is just miscommunication/lack of communication so I it gets to the point where you just want the book to end.

10 people found this helpful

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  • Jessica Leigh
  • 2021-09-21

Absolutely perfect.

Please tell me she has more books… Its like the Frasier of romance novels. You don’t understand the highbrow joke but you know it’s supposed to be funny.

5 people found this helpful

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    3 out of 5 stars
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  • Catherine
  • 2021-10-02

So cute and frustrating at the same time..

There is so much to love about this book. It’s a very cute story and most of the characters are great. The dialogue and witty banter is fun to read. Then… somewhere in the middle of the story, you start to get super frustrated that the lead is so naïve and wimpy. The lead character gets neon signs thrown in front of her face over and over and then somehow works up a mental story to ignore everything. It’s not very believable and gets annoying after awhile. I got to the point where I just wanted it to be over. I liked the story enough that I wanted to finish the book but was ready for the hea.

2 people found this helpful

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    5 out of 5 stars
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  • VoraciousReader34
  • 2021-09-29

Amazing!!

I was so engrossed from the very beginning that I didn't want to stop listening! This will be a favorite!

2 people found this helpful

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    5 out of 5 stars
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  • Maridee
  • 2021-09-29

Best book I have read in years!

I ordered this book because of tiktok like most people. amazingly it was even better than all of the reviews. it is hands down the best book I have bread and quite some time. There was never a dull spot. I laughed, I antagonized, it just held my attention through the whole book. I would recommend this book to anyone who actually wants to feel amazing about the book you just read.

2 people found this helpful

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    5 out of 5 stars
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  • HTF
  • 2021-09-28

Couldn't stop listening

Pure, joyful entertainment. Sharp and funny, lovely characters, literally couldn't put it down and finished it in basically one day.

2 people found this helpful

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    5 out of 5 stars
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  • Amazon Customer
  • 2021-09-28

Favorite rom com so far!

Absolutely loved this book. The characters were so likable. This is definitely a rom com fit for a feminist. I’ll be looking for more from this author.

2 people found this helpful

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    5 out of 5 stars
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    4 out of 5 stars
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  • K. Heintz
  • 2021-09-28

Best romcomdrom of 2021

Is that a thing?? Now it is. Great light read. Good story. Good characters that you can connect with.

2 people found this helpful