Love on the Brain
Quotes from the Book
carry yourself with the confidence of a mediocre white man
I wish you could see yourself the way I see you" - Adam
I’m going to kill you,” he gritted out, little more than a growl. “If you say another word about the woman I love, if you look at her, if you even think about her - I’m going to fucking kill you.
I'm starting to wonder if this is what being in love is. Being okay with ripping yourself to shreds, so the other person can stay whole.
You can fall in love: someone will catch you.
Did you… Did you just kiss me?” He sounded puzzled, and maybe a little out of breath. His lips were full and plump and… God. Kissed. There was simply no way Olive could get away with denying what she had just done. Still, it was worth a try. “Nope.” Surprisingly, it seemed to work. “Ah. Okay, then.” Carlsen nodded and turned around, looking vaguely disoriented. He took a couple of steps down the hallway, reached the water fountain - maybe where he’d headed in the first place. Olive was starting to believe that she might actually be off the hook when he halted and turned back with a skeptical expression. “Are you sure?
And then I'll come find you, and I'll take care of you." - Adam
Expiration dates are for the weak.
Pretty fucking tragic twist of fate, but you don’t seem to remember that we first met years ago. An issue, since I remember a little too well. I like no one, absolutely no one, but I liked you from the start. I liked you when I didn’t know you, and now that I do know you it’s only gotten worse. Sometimes, often, always, I think about you before falling asleep. Then I dream of you, and when I wake up my head’s still there, stuck on something funny, beautiful, filthy, intelligent that’s all about you. It’s been going on for a while, longer than you think, longer than you can imagine, and I should have told you, but I have this impression, this certainty that you’re half a second from running away, that I should give you enough reasons to stay. Is there anything I can do for you? I’ll take you grocery shopping and fill your fridge when we’re back home. Buy you a new bike and a case of decent reagent and that sludge you drink. Kill the people who made you cry. Is there something you need? Name it. It’s yours. If I have it, it’s yours.
It wasn’t until a few minutes later, when she was sitting on her bed staring at the Boston skyline and chewing on her lunch, that Olive realized that the protein bar Adam had given her was covered in chocolate.
Ssh.” His arm slid around her waist, his hand coming to rest on her hip in a gesture that should have been unpleasant but just felt reassuring. His voice was low when he added, “It’s fine.” The words vibrated in her ear, rich and warm. “More material for my Title IX complaint.
What did Adam's fortune cookie say?" "Mmm." Olive made a show to look at the strip. "Not much. Just 'Holden Rodrigues, Ph.D., is a loser.'" Malcolm sped up just as Holden flipped her off, making her burst into laughter. "What does it really say?" Adam asked when they were finally alone. Olive handed him the crumpled paper and remained silent as he angled it to read it in the lamplight. She wasn't surprised when she saw a muscle jump in his jaw, or when he slid the fortune into the pocket of his jeans. She knew what it said, after all. You can fall in love: someone will catch you.
This might be inappropriate but... Olive. You are really... You are extraordinary
You kiss him and next thing you know he's saving your ass and he's buying you scones and calling you a smart-ass in a weirdly affectionate tone
He’d clearly never seen a rom-com or read a romance novel in his life.
I know it’s scary, being vulnerable, but you can allow yourself to care. You can want to be with people as more than just friends or casual acquaintances.
I wish you could see yourself the way I see you
Olive,” Dr. Aslan interrupted her with a stern tone. “What do I always tell you?” “Um . . . ‘Don’t misplace the multichannel pipette’?” “The other thing.” She sighed. “ ‘Carry yourself with the confidence of a mediocre white man.’
Olive had felt that he was on her side. Over & over, & in ways that could never have anticipated, he had made her feel unjudged. Less alone.
You put in expired contacts?” He sounded personally offended “Just a little expired.” “What’s ‘a little’?” “I don’t know. A few years?” “What?” His consonants were sharp and precise. Crisp. Pleasant. “Only a couple, I think.” “Just a couple of years?” “It’s okay. Expiration dates are for the weak.” A sharp sound - some kind of snort. “Expiration dates are so I don’t find you weeping in the corner of my bathroom.” Unless this dude was Mr. Stanford himself, he really needed to stop calling it his bathroom.
She sighed. “ ‘Carry yourself with the confidence of a mediocre white man.’ ” “More than that, if possible. Since there is absolutely nothing mediocre about you.
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.
Because I’m starting to wonder if this is what being in love is. Being okay with ripping yourself to shreds, so the other person can stay whole.
She had not figured that Adam would notice her while in conversation with a young, beautiful faculty member. She had not figured that he’d suddenly stop speaking, eyes widening and lips parting; that he’d mutter “Excuse me” while staring at Olive and stand from the table, ignoring the curious looks in his directions that he’d march to the entrance, where Olive was, with quick, long strides and a concerned expression. “Olive, are you okay?” he asked her.
You mean you’ve done this before?” She frowned. “Done what?” “Put in expired contacts.” “Of course. Contacts are not cheap.” “Neither are eyes.” Humph. Good point.
It never occurred to Olive that Dr. Adam Carlsen—known ass—had called her by her name.
Yep. I’m so glad he finally scrounged up the courage to ask you out. He’d been going on and on about this ‘amazing girl’ for years, but he was concerned about being in the same department, and you know how he is . . .” He shrugged and waved his hand. “I’m glad he finally managed to pull his head out of his ass.
She frowned. “I asked if I could kiss you, and you said yes.” “Incorrect. You asked if you could kiss me and I snorted.” “I’m pretty sure I heard you said yes.” He lifted one eyebrow, and for a minute Olive let herself daydream of drowning someone. Dr. Carlsen. Herself. Both sounded like great options.
Did you know?
- The novel began as Star Wars fan fiction titled "Head Over Feet," centered on the Reylo (Rey and Kylo Ren) pairing, which Hazelwood posted on Archive of Our Own in 2018.
- The cover illustration was designed to resemble actors Daisy Ridley and Adam Driver, echoing the story's fan-fiction roots.
- It was Ali Hazelwood's debut novel and became a New York Times bestseller that stayed on the list for many weeks.
- The story is set at Stanford University and draws on Hazelwood's own experience as a neuroscientist.
- A film adaptation for Prime Video stars Lili Reinhart as Olive and Tom Bateman as Adam Carlsen, directed by Claire Scanlon.
About Ali Hazelwood
More by Ali Hazelwood
About the book
The Love Hypothesis is a contemporary romantic comedy that follows Olive Smith, a third-year biology PhD candidate at Stanford whose research is driven by the pancreatic cancer that took her mother. To convince her best friend Anh that she has moved on from an ex, Olive impulsively kisses the first man she sees in a hallway, who happens to be Dr. Adam Carlsen, a young professor with a reputation for being harsh and exacting. The two strike a bargain to fake-date one another, and the arrangement slowly thaws into something real.
Beneath its fake-dating premise, the novel explores the realities of women in STEM, the precarity of academic funding and grad-student life, found family, and the gap between a person's intimidating reputation and who they actually are. Hazelwood draws on her own background as a neuroscientist to ground the romance in believable lab culture, mentorship dynamics, and the pressures of building a research career.
The book began as Star Wars fan fiction centered on the Reylo pairing before being reworked for publication, and it became a breakout success: a New York Times bestseller that spent many weeks on the list and launched Hazelwood as a leading name in STEM romance. It drew positive notices from outlets such as Entertainment Weekly and Publishers Weekly, a starred review from Library Journal, and finished as a runner-up in the 2021 Goodreads Choice Awards for Romance.
Key characters
- Olive SmithThird-year biology PhD candidate at Stanford researching pancreatic cancer
- Dr. Adam CarlsenYoung, demanding professor who agrees to fake-date Olive
- Anh PhamOlive's best friend, whose dating life prompts the fake-relationship scheme
- Dr. Tom BentonA celebrated scientist and Adam's longtime friend and collaborator
- MalcolmOlive's roommate and friend
Book details
- First published
- 2021
- Length
- 384 pages
- Series
- The STEMinist Novels
- Reading time
- 7 hours
- Author
- Ali Hazelwood
- Genre
- Romance
- Goodreads rating
- 4.09 (2M ratings)
Critical reception
- Became a New York Times bestseller and spent many weeks on the list.
- Received a starred review from Library Journal and positive notices from Entertainment Weekly and Publishers Weekly.
- Finished as runner-up for Romance in the 2021 Goodreads Choice Awards.
- Widely credited with helping popularize the STEM romance subgenre and establishing Hazelwood as a leading voice in it.
The buzz
- SlateAli Hazelwood's new book: Why people are snapping up her romance novels about STEM2023Cultural look at Hazelwood's rise on the strength of The Love Hypothesis.
- The Hollywood ReporterPrime Video Drops First Teaser for 'The Love Hypothesis' Starring Lili Reinhart and Tom Bateman2026Coverage of the film adaptation's first teaser and its faithfulness to the novel.
- Deadline'The Love Hypothesis' Trailer Teases Bond Between Lili Reinhart's Olive Smith And Tom Bateman's Adam Carlsen2026Feature on the trailer and casting for the Prime Video adaptation.
Movie & TV adaptations
- IMDb
If you liked this, read…
- 1Love on the BrainAnother Hazelwood STEM romance with a rivals-to-lovers academic setup.
- 2The Kiss Quotient by Helen HoangContemporary romance pairing a STEM-minded heroine with an arrangement that turns real.
- 3Beach Read by Emily HenryBanter-driven contemporary romance with reluctant leads forced together.
Keep reading
Friends Without Benefits
Josh and Hazel's Guide to Not Dating
Almost Like Being in Love
Smooth Talking Stranger
Flat-Out Love
Only for You
Ain't She Sweet
The Indigo Spell
Attachments
The Avery Shaw Experiment
A Match Made in High School
Simply Irresistible
The Fine Art of Truth or Dare
Holiday Romance
The Hook Up
Not You It's Me
Just for the Summer
Half-Blood
Easy
Sweet Evil
Romancing the Duke
Isla and the Happily Ever After
Stuck-Up Suit
The Fiery Heart
Problematic Summer Romance
Bad Romeo
The Crown
Rites of Spring (Break)
The Intimacy Experiment
A Kiss in Time
My Vampire Plus-One
Love on the Brain
Evernight
Mr. Perfect
Succubus on Top
The Risk
Crush
Becoming Alpha
Covet
Dirty Red
A Week to be Wicked
Trouble
The Rivals
Rules of Attraction
My Roommate Is a Vampire
Neanderthal Seeks Human
Natural Born Charmer
Bloodfever
Hourglass
Crash
Vision in White
On Dublin Street
Split Second
Royally Screwed
The Selection
Beautiful Stranger
Wicked Beat
On the Edge
Kiss an Angel
The Last Letter from Your Lover

