The Love Hypothesis brings science, friendship, and a fake relationship together in a romantic comedy filled with unexpected chemistry. Based on the bestselling novel by Ali Hazelwood, the movie combines academic life with feelings that refuse to follow any logical formula.
Available to stream on Prime Video, the movie premiered on September 23, 2026. Lili Reinhart stars as Olive, while Tom Bateman plays Adam Carlsen.
With romance, humor, and the popular fake dating trope, The Love Hypothesis is designed to appeal to longtime fans of the book as well as viewers discovering the story for the first time.
What is The Love Hypothesis about?
The story follows Olive, a brilliant PhD student focused on building her academic career.
However, things become complicated when she realizes that her best friend is interested in Jeremy, someone Olive previously had feelings for.
Determined to prove that she has moved on, Olive makes a completely impulsive decision.
She kisses Adam Carlsen, a professor known for his intimidating personality.
What was supposed to be a quick solution soon turns into something much more complicated.
Olive and Adam realize that pretending to be in a relationship could benefit both of them. As a result, they create a few rules and officially begin their fake romance.
However, keeping real feelings out of the experiment becomes much harder than expected.
Soon, what started as a simple arrangement begins producing surprising results.
A fake relationship with real chemistry
The fake dating dynamic is one of the main elements of The Love Hypothesis.
At first, Olive believes she can keep everything under control. After all, there are clear rules, and neither of them is supposed to become emotionally involved.
But feelings do not always follow scientific logic.
As Olive and Adam spend more time together, their relationship begins to change. Small moments reveal different sides of both characters.
Their growing connection also forces them to question what they thought they understood about love and relationships.
Therefore, the experiment becomes about much more than convincing the people around them.
Olive must eventually decide whether she is willing to take a risk and accept what she truly feels.
Lili Reinhart and Tom Bateman lead the cast
Lili Reinhart stars as Olive, the PhD student whose impulsive kiss sets the entire story in motion.
Tom Bateman plays Adam Carlsen, the intimidating professor who unexpectedly agrees to participate in the fake relationship.
The cast also includes Rachel Marsh as Anh, Nicholas Duvernay as Jeremy, along with Jaboukie Young-White and Arty Froushan.
Claire Scanlon directs the adaptation, while Sarah Rothschild wrote the screenplay based on Ali Hazelwood’s novel.
The movie has a runtime of approximately 1 hour and 52 minutes.
From bestselling novel to Prime Video
Before reaching the screen, The Love Hypothesis became a major success among romance readers around the world.
Ali Hazelwood’s novel combines academic life with romantic comedy, using the contrast between logic and emotion as an important part of the story.
That same contrast remains central to the movie adaptation.
Olive is committed to her research and determined to build a successful career. Meanwhile, Adam becomes the unexpected person who challenges many of her assumptions.
The story also plays with scientific ideas throughout the romance.
Olive may be excellent at forming hypotheses for her research, but finding a logical explanation for love proves to be much more difficult.
Romance, friendship, and academic life
Although romance is at the center of The Love Hypothesis, the story also explores friendship and professional ambition.
Olive’s friendship with Anh directly influences many of her decisions.
In fact, her attempt to help her friend is what leads to the impulsive kiss that starts the entire fake dating situation.
Academic life is also an important part of the plot.
Olive is working to establish herself professionally while navigating a demanding and competitive environment.
Because of that, the movie is not only about the development of a romantic relationship.
It also follows a young woman trying to balance friendship, career goals, insecurities, and feelings that were never part of her original plan.
Who should watch The Love Hypothesis?
The Love Hypothesis may especially appeal to viewers who enjoy modern romantic comedies.
Fans of fake dating stories will also recognize one of the genre’s most popular tropes.
In addition, the contrast between Olive and Adam helps create a romantic dynamic built on humor, tension, and unexpected moments.
Readers of Ali Hazelwood’s novel can see how the characters and their relationship were adapted for the screen.
However, viewers do not need to read the book before watching the movie.
The story introduces the characters and their motivations from the beginning, making it easy for newcomers to follow the romance.
Where can you watch The Love Hypothesis?
The Love Hypothesis is available to stream on Prime Video starting September 23, 2026.
Watch The Love Hypothesis here on Prime Video.
For viewers who enjoy stories where feelings appear at the least convenient moment, the movie combines romance, humor, friendship, and academic life.
Olive may know how to build a scientific hypothesis.
However, discovering whether love can follow a formula may become her most complicated experiment yet.
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