Skip to content

The Love Hypothesis by Ali Hazelwood 3 Books Collection Set - Fiction - Paperback

Save 34% Save 34%
Original price £27.97
Original price £27.97 - Original price £27.97
Original price £27.97
Current price £18.49
£18.49 - £18.49
Current price £18.49
in stock, ready to be shipped

Free Delivery Over £40 | Express Available

SKU B2D4853 ISBN: 9783616027913
by Sphere
Collect Book Points from your order!

10% cashback is waiting for you! Click on the green icon reading "Unlock Exclusive Rewards" below to sign up.

Experience the exhilarating journey of love, passion, and self-discovery with these captivating novels by Ali Hazelwood. Brace yourself for a whirlwind of emotions as you delve into the enchanting world of The Love Hypothesis, Love on the Brain, and Loathe to Love You. With vibrant characters, sizzling chemistry, and heartfelt narratives, these books are destined to sweep you off your feet and leave you yearning for more. Buy all three books in the sensational series, available now at Books2Door!

In The Love Hypothesis, prepare to be completely smitten by Olive Smith, a brilliant and fiercely independent PhD student who finds herself entangled in an unexpected experiment called love. Determined to prove her scientific theory on the connection between attraction and compatibility, Olive strikes a deal with Adam Carlsen, her charming and infuriatingly attractive professor. As they embark on a fake dating escapade, their pretend romance begins to blur the lines between what's real and what's merely a hypothesis. Will Olive's heart succumb to the unexpected chemistry between them, or will her rational mind prevail? Ali Hazelwood weaves a tale of witty banter, undeniable attraction, and the power of love that will leave you breathless.

Ali Hazelwood’s Love on the Brain, Dr. Bee Königswasser, a talented and driven neuroscientist, finds herself facing her greatest challenge yet—love. Determined to focus solely on her career, she has diligently avoided any romantic entanglements. However, when she embarks on a career-high assignment of co-leading a project at NASA, she has to contend with working alongside her old grad school nemesis, Levi Ward. And the thing is, she can't help but feel a magnetic pull towards him. With his irresistible charm and a shared passion for science, Levi becomes both Bee’s biggest distraction and her greatest temptation. As they navigate the complexities of their past and the uncertainties of the present, they discover that love is as captivating and elusive as the intricacies of the human brain. Ali Hazelwood expertly combines humour, heartache, and scientific curiosity in this breathtaking tale of second chances and the power of following your heart.

Loathe to Love You is Ali Hazelwood’s STEMinist novella featuring a trio of engineers and their loves in loathing- now included with a special bonus chapter! The first story, Under One Roof, tells the story of an environments engineers who discovers why scientists should never cohabitate after being stuck in the room with her lab enemy. Stuck With You follows the rivalry between a civil engineer and her rival nemesis who run through their enemies-to-lovers course after getting trapped in a New York elevator. Below Zero is a heart-warming romance story that follows a NASA aerospace engineer whose frozen and determined heart melts as she lies stranded in the remote Arctic research station with the only person willing to aid in her rescue being her long-time rival. 

Ali Hazelwood's writing is a symphony of emotions, skillfully crafting narratives that transport readers into the hearts and minds of her vibrant characters. Her stories are infused with wit, charm, and an authentic portrayal of the complexities of love and relationships. With every turn of the page, you'll find yourself swept away in a torrent of passion, laughter, and heartache.

Whether you're a hopeless romantic or a sceptic of love, Hazelwood's novels will reignite your belief in the transformative power of romance. From the stimulating intellectual battles in The Love Hypothesis to the captivating exploration of the human brain in Love on the Brain and the explosive chemistry of rivals-turned-lovers in Loathe to Love You, these books will leave an indelible mark on your heart.

So, grab your favourite blanket, find a cosy reading nook, and immerse yourself in the world of Ali Hazelwood's novels. Let her words weave a spell around you as you discover the boundless magic of love, one unforgettable story at a time. Discover why these books have been a customer-favourite booktok sensation and grab all three titles in one amazing, great-value boxset available now at Books2Door! 

Ali Hazelwood books in order:

The Love Hypothesis Series:

  1. The Love Hypothesis
  2. Love on the Brain

STEMinist Novellas:

  1. Loathe To Love You

Description from the Publisher:

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?

Loathe To Love You

Mara, Sadie, and Hannah are friends first, scientists always. Though their fields of study might take them to different corners of the world, they can all agree on this universal truth: when it comes to love and science, opposites attract, and rivals make you burn....

Under One Roof

An environmental engineer discovers that scientists should never cohabitate when she finds herself stuck with the roommate from hell - a detestable big-oil lawyer who won't leave the thermostat alone.

Stuck with You

A civil engineer and her nemesis take their rivalry - and love - to the next level when they get stuck in a New York elevator.

Below Zero

A NASA aerospace engineer's frozen heart melts as she lies injured and stranded at a remote Arctic research station and the only person willing to undertake the dangerous rescue mission is her longtime rival.


We aim to process and dispatch our orders within 24 hours. The orders go into our warehouse to be picked, packed and consolidated into one parcel where appropriate. Please note orders are only processed Monday-Friday.

We sometimes split orders between multiple parcels. Items from our extended range section are dispatched separately.

If any items are missing from your delivery, please allow 2 working days for the rest of your order to arrive before contacting us at

All of our books are 100% brand new, unread and purchased directly from the publishers in bulk allowing us to pass the huge savings on to you!


Single Books and items under 750g

Standard Delivery: £1.99 (2-4 working days)

Orders Under £40

Standard Delivery: £3.99 (2-4 working days)
Express Delivery: £5.99 (1-2 working days)

Orders between £40 and £100

Standard Delivery: Free (2-4 working days)
Express Delivery: £3.99 (reduced rate, 1-2 working days)

Orders over £100

Express Delivery: Free  (1-2 working days)

These delivery times are the maximum delivery periods that a purchase can take to reach our customers. Delivery may be sooner than this. These times are an estimation, not a guarantee.

There are no deliveries on Saturdays, Sundays or Bank Holidays.

We’ve been featured in...

Get your order now

Ordering from Books2Door couldn't be simpler


We make it easy to find your favourite books


We pack your order safely and send it straight to your door


With book points, wishlist, refer a friend and more, you'll want to shop again


Any problems? Contact our support team

Big box sets at tiny prices

Big box sets at tiny prices

Welcome to Books2Door, the one-stop shop for all your children's book needs! We specialise in selling cheap children’s box sets and series at bargain prices.

At Books2Door, we believe that reading is a fundamental skill that every child should have to help improve their vocabulary, grammar, and critical thinking skills.

We understand that buying kids books can be expensive. That's why we offer a wide range of box sets and series at affordable prices, making it easier for parents, teachers, and libraries to access quality books for children.

Our team is made up of book lovers who are dedicated to sourcing and providing the best books for kids. We work closely with publishers and authors to ensure that we offer the best books on the market for your child.

Our story

Don't just take our word for it...

Check out our amazing reviews on Trustpilot, Google Customer Reviews, and more!


Are your books brand new? How are they such good value?

All our books are brand new and delivered to us straight from the publisher. Our special sales editions are bought in bulk at a great discount - which we pass on to you!

Are the books different from what I've seen in the high street?

Special sales editions are made with more affordable materials, allowing the publisher to keep the cost price down, and we can sell it for less than the standard editions

What if I have a problem with my order?

Our support team is available during regular business hours to support you with any questions you may have. Call or 0116 210 4294 or email us.

Fantastic Savings

Up to 80% off RRP

Unlimited Delivery

From £9.95 a year with PLUS+

1 Million Customers

Bargain prices since 2004

⭐⭐⭐⭐⭐ Service

0116 210 4294 or email us