The Love Hypothesis By Ali Hazelwood 4 Book Set

Product details

• Publisher ‏ : ‎ Hachette UK Ltd

• Publication date ‏ : ‎ 9 Dec. 2025

• Print length ‏ : ‎ 1568 pages

• Paperback

• ISBN-13 ‏ : ‎ 9781408734919

• Item weight ‏ : ‎ 1.2 kg

Dive into the captivating world of Ali Hazelwood with this four-book romance set featuring 'The Love Hypothesis', 'Love on the Brain', 'Love, Theoretically', and 'Not in Love'. Perfect for fans of heartfelt, witty, and modern love stories, each book comes in a visually appealing paperback, making this bundle an ideal gift for book lovers and romance enthusiasts.

Titles in this Set:

1. The Love Hypothesis
2. Love on the Brain
3. Love, Theoretically
4. Not in Love

The Love Hypothesis
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 on her way to a happily ever after was always going to be tough, scientists require proof. So, like any self-respecting woman, 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. This is why Olive is positively floored when he agrees to keep her charade a secret and be her fake boyfriend. But when a big science conference goes haywire and Adam surprises her again with his unyielding support (and his unyielding abs), their little experiment feels dangerously close to combustion.

Olive soon discovers that the only thing more complicated than a hypothesis on love is putting her own heart under the microscope.

Love on the Brain
Bee Königswasser lives by a simple code: What would Marie Curie do? If NASA offered her the lead on a neuro-engineering project - a literal dream come true - Marie would accept without hesitation. Duh. But the mother of modern physics never had to co-lead with Levi Ward.

Sure, Levi is attractive in a tall, dark, and piercing-eyes kind of way. But Levi made his feelings toward Bee very clear in grad school - archenemies work best employed in their own galaxies far, far away.

But when her equipment starts to go missing and the staff ignore her, Bee could swear she sees Levi softening into an ally, backing her plays, seconding her ideas... devouring her with those eyes. The possibilities have all her neurons firing.

But when it comes time to actually make a move and put her heart on the line, there's only one question that matters: What will Bee Königswasser do?

Love, Theoretically
Rival physicists collide in a vortex of academic feuds and fake dating shenanigans in this delightfully STEMinist romcom.

The many lives of theoretical physicist Elsie Hannaway have finally caught up with her. By day, she's an adjunct professor, toiling away at grading labs and teaching thermodynamics in the hopes of landing tenure. By other day, Elsie makes up for her non-existent paycheck by offering her services as a fake girlfriend, tapping into her expertly honed people-pleasing skills to embody whichever version of herself the client needs.

Honestly, it's a pretty sweet gig - until her carefully constructed Elsie-verse comes crashing down. Because Jack Smith, the annoyingly attractive and arrogant older brother of her favourite client, turns out to be the cold-hearted experimental physicist who ruined her mentor's career and undermined the reputation of theorists everywhere. And he's the same Jack Smith who rules over the physics department at MIT, standing right between Elsie and her dream job.

Elsie is prepared for an all-out war of scholarly sabotage but… those long, penetrating looks? Not having to be anything other than her true self when she's with him? Will falling into an experimentalist's orbit finally tempt her to put her most guarded theories on love into practice?

Not in Love
Rue Siebert might not have it all, but she has enough: a few friends she can always count on; the financial stability she yearned for as a kid; and a successful career as a biotech engineer at Kline, one of the most promising start-ups in the field of food science. Her world is stable, pleasant, and hard-fought. Until a hostile takeover and its offensively attractive front man threatens to bring it all crumbling down.

Eli Killgore and his business partners want Kline, period. Eli has his own reasons for pushing this deal through - and he's a man who gets what he wants. With one burning exception: Rue. The woman he can't stop thinking about. The woman who's off-limits to him.

Torn between loyalty and an undeniable attraction, Rue and Eli throw caution out the lab and the boardroom windows. Their affair is secret, no-strings-attached, and has a built-in deadline: the day one of their companies will prevail. But the heart is risky business - one that plays for keeps.