Prime Video releases the first teaser for 'The Love Hypothesis,' arriving September 23

Prime Video has released the first teaser for The Love Hypothesis, the film version of Ali Hazelwood's 2021 romance novel, and locked a streaming date of September 23. The footage premiered over the weekend at the company's first Obsessed Fest fan event in Los Angeles, after a copy leaked online Friday, and it gives the book's very large readership their first real look at the cast in character.

The teaser does not play like a standard rom-com cut. Instead of stringing together a meet-cute and a needle drop, it styles itself as a retro scientific instructional film, with chemical diagrams and a dry voiceover that frames the central romance as a controlled experiment. It is a smart way to sell a story whose whole hook is academia, and it is the rare teaser that picks a tone and commits to it.

Lili Reinhart plays Olive Smith, a Ph.D. candidate who would rather think about her research than her love life. To convince her best friend Anh (Rachel Marsh) that she has moved on from a mutual crush, Olive impulsively kisses the most intimidating man on campus, professor Adam Carlsen, played by Tom Bateman. The kiss becomes a fake relationship, and the fake relationship becomes the thing fake relationships always become. Nicholas Duvernay, Jaboukie Young-White and Arty Froushan round out the department.

Claire Scanlon directs from a script by Sarah Rothschild. Scanlon is a reassuring name on this one. She made Set It Up, the 2018 Netflix movie that did about as much as anything in its stretch to convince studios the rom-com was worth funding again, and she has spent years directing comedy that actually lands, on The Good Place and Brooklyn Nine-Nine. If you want someone to handle banter and a slow-building will-they-won't-they, you could do far worse. Hazelwood is an executive producer.

The expectations here are real, and so is the pressure. The Love Hypothesis was a New York Times bestseller and a BookTok fixture, and it began as Star Wars fan fiction built around Rey and Kylo Ren before Hazelwood reworked it into an original novel. A readership that devoted is a gift and a trap. They will show up, and they will clock every change. A teaser cannot tell you whether the chemistry between Reinhart and Bateman holds for two hours, which is the only question that decides a movie like this. What it can tell you is that the people who made it understand the assignment and are not embarrassed by it. In a genre that spent a decade getting treated as a chore, that is not nothing.

The Love Hypothesis streams on Prime Video on September 23.