5 Jaw-Dropping Revelations About The Summer I Turned Pretty Season 3 And The Shocking Movie Finale

The wait is finally over, and the drama has reached its peak. As of December 18, 2025, fans of the beloved Prime Video series, The Summer I Turned Pretty, have officially witnessed the conclusion of the main television series arc with the release of Season 3, based on Jenny Han’s final book, We’ll Always Have Summer. This season delivered the long-awaited resolution to the Belly, Conrad, and Jeremiah love triangle, but not without some major, heart-wrenching twists that have left the fandom completely polarized, especially concerning Belly Conklin’s ultimate choice. The series may have wrapped up its 11-episode run, but the story isn't quite finished, thanks to a massive, unprecedented announcement from the creators.

The third season, which premiered on July 16, 2025, was a tumultuous journey through college, a surprise engagement, and the painful process of growing up. It was confirmed to be the final season of the main show, but the biggest news dropped in September 2025: a feature-length film is coming to officially close the chapter on the Cousins Beach crew. Here is the complete, up-to-date breakdown of everything you need to know about the final season, the dramatic ending, and the future of the franchise.

The Cousins Beach Crew: Complete Season 3 Cast and Character Profiles

The final season saw the return of all the core cast members, who brought the emotional weight of the third novel to life. The dynamic between the Conklins and the Fishers was more intense than ever as the story navigated the post-Susannah Fisher world and the pressure of Belly’s impending decisions. The show, helmed by creator Jenny Han, ensured every fan-favorite entity was back for the conclusion.

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• Lola Tung as Isabel ‘Belly’ Conklin: The protagonist whose life revolves around Cousins Beach and the Fisher brothers. Season 3 sees her navigate college life, a surprising engagement, and the final choice between the two loves of her life.
• Christopher Briney as Conrad Fisher: The brooding, eldest Fisher brother. His journey in Season 3 focuses on his medical school path and his complicated, undeniable connection with Belly.
• Gavin Casalegno as Jeremiah Fisher: The charming, younger Fisher brother. The season explores his relationship with Belly, which takes a serious turn, leading to a dramatic confrontation with Conrad.
• Sean Kaufman as Steven Conklin: Belly’s older brother, who continues his own college journey and provides much-needed comic relief and brotherly support.
• Jackie Chung as Laurel Park: Belly and Steven’s mother, who provides a grounded perspective on grief and adult relationships.
• Rachel Blanchard as Susannah Fisher: Appears in flashbacks and is a central entity whose memory and death continue to shape the lives of all the main characters, particularly the Fisher brothers.
• Kyra Sedgwick and Elsie Fisher: While their characters from Season 2 were new additions, their presence is felt throughout the third season's college and family dynamics.

The Summer I Turned Pretty Season 3: Plot Twists and The Belly-Jeremiah Engagement

The third season, comprising 11 episodes, picks up after the dramatic conclusion of Season 2, where Belly chose to be with Jeremiah. The narrative then jumps forward, mirroring the timeline of the source material, We’ll Always Have Summer. This time jump immediately sets a tone of heightened stakes and adult decisions.

The biggest shock for viewers was Belly and Jeremiah’s rash decision to get married. Driven by the fear of losing each other and the emotional fallout from Susannah’s death, the two decide to tie the knot early in their college careers. This decision forms the central conflict of the season, forcing Conrad Fisher back into the picture in a major way. The wedding planning, the tension with Laurel Park and Steven Conklin, and the looming presence of Conrad created a pressure cooker of emotions.

The Battle for Belly's Heart: Conrad's Return and The Paris Reunion

The love triangle reached its inevitable, painful conclusion. Jeremiah’s insecurity about Belly's true feelings for Conrad, coupled with Conrad’s consistent, albeit emotionally guarded, presence, led to a series of confrontations and emotional breakdowns. The season beautifully utilized the backdrop of Cousins Beach, the place where all their memories reside, to force the brothers to finally have a productive, face-to-face encounter regarding their shared love for Belly.

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The pivotal moment that sealed the fate of the love triangle was the dramatic Paris reunion. Following a huge fight with Jeremiah, Belly finds herself reconnecting with Conrad, who travels to Paris to meet her. This reunion was not just a romantic moment; it was the realization for Belly that her love for Conrad was the deep, lifelong connection she could never truly escape. The chemistry between Lola Tung and Christopher Briney in these final episodes was palpable, cementing the show’s decision to follow the book’s ultimate pairing.

The Series Finale: Belly and Conrad's Destiny Confirmed

The final episodes of The Summer I Turned Pretty Season 3 saw Belly make her final, decisive choice. She breaks off her engagement to Jeremiah, acknowledging that while she loves him, her heart ultimately belongs to Conrad. This was a devastating blow for Team Jeremiah, but a triumphant moment for Team Conrad. The series finale, Episode 11, concluded the main narrative in a manner that closely mirrored the epilogue of the book, We'll Always Have Summer.

The last scenes show Belly and Conrad together in Cousins Beach, finally on the same page and embracing their future. This ending provided the emotional closure fans were craving, confirming the "endgame" couple. However, the show's creators felt the story—and the characters—deserved an even grander send-off, leading to the shocking announcement that followed the series conclusion.

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The Shocking September 2025 Announcement: A Feature-Length Movie

Just weeks after the series finale aired, Prime Video made a massive announcement on September 17, 2025: The Summer I Turned Pretty would officially conclude with a feature-length film, tentatively titled The Summer I Turned Pretty: The Movie. This is an unprecedented move for a young adult streaming series and speaks volumes about the show's global success and cultural impact.

Series creator and author Jenny Han, who also serves as the showrunner, is confirmed to be directing the film. The movie is set to be a true sequel, moving beyond the main book trilogy to explore the next chapter of Belly and Conrad’s lives, potentially years after the events of Season 3. This cinematic conclusion will allow the creative team to fully explore the transition from young love to adult commitment, providing a final, definitive look at the characters' destinies.

The feature film is a direct response to the topical authority and passion of the fandom, promising to deliver a high-budget, theatrical-quality farewell. While a release date has not been officially confirmed, the announcement itself, coming so soon after the series finale, has generated immense buzz, ensuring the Cousins Beach story will live on.

What’s Next for The Summer I Turned Pretty Universe?

With the main series concluded and the feature film in pre-production, the TSITP universe remains a dominant force in pop culture. The show successfully adapted the beloved trilogy, but the movie will be charting new territory, allowing for fresh plot developments outside the established books. Fans are already speculating about the feature film's plot, including potential wedding scenes, career paths for Steven and Jeremiah, and the future of Laurel Park's writing career.

The journey from the first summer at Cousins Beach to Belly's final choice has been a defining television event of the mid-2020s. The release of Season 3 on Prime Video on July 16, 2025, confirmed the romantic destiny of Belly and Conrad, but the upcoming movie promises an even deeper, more mature exploration of the characters. Keep an eye on Prime Video for the latest updates on The Summer I Turned Pretty: The Movie—the final, ultimate summer is still on its way.