The emotional stakes of The Summer I Turned Pretty universe have just exploded. Leaked script pages from the rumored TSITP movie, allegedly directed by series creator Jenny Han herself, confirm that the final chapter of Belly’s love story is defined not by a choice, but by a devastating act of selflessness. The core revelation: one Fisher brother makes a shocking sacrifice to ensure Belly’s ultimate endgame, shattering the love triangle forever. This act of sacrifice, combined with a hidden letter from Susannah, is said to change “EVERYTHING,” driving fans into a frenzy of speculation: Did Conrad’s vow or Jeremiah’s vow truly hold the power?

The impending cinematic conclusion promises to be pure emotional carnage, forcing Belly to confront a reality where her happiness comes at the cost of one brother’s heartbreak. Click before the secrets of Cousins Beach are washed away by the tide.

The Shock of Sacrifice: A Brother Steps Aside

The most explosive detail from the alleged script leak is the “shocking sacrifice.” This isn’t a simple breakup; it suggests a monumental, life-altering decision made by one of the Fisher brothers to permanently remove himself from the running.

The sacrifice is interpreted by fans as potentially being:

Geographical Sacrifice: One brother chooses a career or academic path that takes him far away from Cousins Beach and Belly permanently, ensuring she cannot easily choose him.

Emotional Sacrifice: One brother deliberately pushes Belly away, perhaps making himself seem unsuited or toxic, so that she can find true, untainted happiness with the other.

The Ultimate Vow: The sacrifice involves honoring a deep, previously unknown promise made to Susannah—a vow that transcends personal feeling for the sake of the family’s future peace.

The entire third act is built around the devastating realization that Belly’s destiny could only be fulfilled if one of the boys was willing to love her enough to let her go, not just once, but forever.

Susannah’s Final Card: The Hidden Letter

The true catalyst for this seismic shift is the rumored hidden letter from Susannah. In the complex, emotionally fraught world of the Fishers, Susannah has always been the ultimate puppet master, guiding the destiny of the boys and Belly. Her letter, discovered at a pivotal moment, is said to reveal a secret that fundamentally alters the nature of the love triangle.

What could Susannah have written that changes everything?

The Prophecy: Did Susannah predict Belly’s true love, urging her sons to accept the inevitable?

The Warning: Did she warn them against repeating the painful love triangle of her own generation (Lorelai, Susannah, and the boys’ fathers)? The letter could be an instruction to prioritize the brothers’ relationship over the girl.

The Mandate: The letter might explicitly ask one son to step aside for the other, an unbearable moral burden that forces the “shocking sacrifice.”

This final communication from the heart of the Fisher family ensures that the ending is tied to a legacy of love, duty, and tragic choice, making the finale less about chemistry and more about destiny.

The Battle of the Vows: Conrad vs. Jeremiah

The movie’s marketing is reportedly built around the conflict between Conrad’s Vow and Jeremiah’s Vow.

Conrad’s Vow: Often silent and protective, Conrad’s love is a heavy weight, suggesting his vow is to protect Belly from pain, even if he has to cause her temporary pain to do it. His sacrifice would likely be the logical, agonizing choice to end the pain for everyone.

Jeremiah’s Vow: Open, passionate, and impulsive, Jeremiah’s love is centered on unwavering presence and commitment. His vow is to always be there. His sacrifice would be the emotional agony of breaking his own core commitment.

The sacrifice will determine whose love was truly selfless. Did the chosen brother choose Belly’s ultimate happiness (even if it wasn’t with him), or did he prioritize the sacred, unbreakable bond between the Fisher brothers? The movie promises to resolve the most divisive conflict in YA literature with one defining, tear-soaked scene.

The Cousins Beach Secrets Wash Away

The TSITP movie is set to deliver Belly’s ultimate endgame, but the cost will be immense. The script leak suggests that while Belly will ultimately find her happiness, the road to that ending will be paved with genuine, heartbreaking loss.

The definitive resolution, fueled by Susannah’s ghostly guidance and the monumental sacrifice of one brother, guarantees that fans will be talking about this ending for years. The final question for the audience is whether they can forgive the chosen brother for his sacrifice, or whether the price paid for Belly’s happiness was too high.