The trailer for The Love Hypothesis, based on Ali Hazelwood's bestselling novel, debuted at Amazon Prime Video's inaugural Obsessed Fest fan event on June 27, 2026, immediately thrilling its target audience. The film, starring Lili Reinhart and Tom Bateman, is set to stream globally on Prime Video from September 23, 2026.
Book-to-Film Adaptation Origins
The novel originated as self-published 'Reylo' fanfiction in 2018, shipping Star Wars characters Rey and Kylo Ren. Hazelwood's book became a BookTok sensation after its official 2021 publication. Last July, Reinhart (Riverdale) and Bateman (British star) were announced as leads, sparking fan excitement given Bateman is married to Daisy Ridley, who played Rey.
Trailer Highlights and Fan Reactions
The 57-second trailer opens with vintage-style snapshots of PhD student Olive Smith (Reinhart) and Professor Adam Carlsen (Bateman) in a Stanford lab, with a voiceover about molecules forming bonds. It shows Olive panic-kissing Adam to convince her friend Anh (Rachel Marsh) she has a boyfriend. Adam reads her ID badge, agrees to the fake relationship, and initiates a kiss as friends cheer.
Fans on social media praised the trailer. Sammie tweeted, 'This movie already won my heart. Love + research + affection. I love this.' Another fan, Fabo, said, 'Omg this is so good, it looks like it was taken directly from the book.' Jenna predicted on Instagram: 'Hypothesis: this will be THE rom-com of the year.'
Some fans expressed impatience with the September release. Nia commented on YouTube, 'September?! You people dare to drop this now and tell I've to wait for another 3 months for this?!' Melinda asked, 'What do you mean September? And not tomorrow?????' Jacky called it 'a slow form of torture.' Others thanked Prime for becoming 'the #1 hub for fake relationship tropes.'
Director and Rating Details
The film is directed by Emmy-nominated Claire Scanlon, known for the 2018 rom-com Set It Up. It carries an R rating in the US, reflecting the spicy content from Hazelwood's book, which emphasizes female pleasure. Chapter 16 of the novel has inspired numerous TikToks.
Cast Comments on Set Moments
During an onstage interview at Obsessed Fest, Reinhart recalled 'the famous sunscreen scene' as a favorite memory due to 'giggling' on set. Bateman shared a favorite scene: 'We're in this coffee shop and it's their first sort of coffee date... I loved it so much because it was kind of the perfect kernel of what the film was, the beating heart of it.'
Broader Rom-Com Revival
The trailer follows Netflix's Voicemails for Isabelle and continues a genre revival after Eternity and Materialists in 2025. Amazon has been acquiring book rights for properties like Fourth Wing and Off Campus, signaling commitment to female-led stories.
