The third season of The Summer I Turned Pretty opens with Belly and Jeremiah in a college relationship, but tensions quickly arise. Jeremiah learns he will have to repeat a semester because he failed some core classes, delaying his graduation. Belly finds out she has been accepted off the waitlist for a study abroad program in Paris for the next semester. Meanwhile, Conrad has taken a summer clinic job at Stanford, which means he will miss his mother Susannah's memorial. Steven is focused on a finance internship after graduating early from Princeton but is distracted by his secret relationship with Taylor, who is also in a separate relationship, creating a complicated dynamic.

At a party, Belly overhears Lacie Barone, Taylor's sorority sister, gossiping about a night she spent with Jeremiah during spring break in Cabo, which was during a break or breakup with Belly. Belly confronts Jeremiah, who tries to explain they were not officially together, but Belly is deeply hurt by the betrayal. This revelation causes a major rift between Belly and Jeremiah, fracturing their relationship.

Jeremiah and Belly briefly reunite, leading to a sudden engagement, surprising everyone around them. However, the engagement is fraught with tension due to the recent betrayals and unresolved feelings, especially involving Conrad.

Susannah's cancer, which had been kept secret, becomes known to the group. On the day of the debutante ball, preparations are underway with Belly planning to attend with Jeremiah. Susannah and Laurel help Belly get the dress she wanted. Steven, having lost money in a poker game, borrows a tuxedo from Shayla's father. Jeremiah begins to suspect something about his mother and discovers Susannah's cancer from her phone. He disappears from the ball, and Conrad takes his place to dance with Belly. Jeremiah confronts Conrad about keeping Susannah's illness a secret throughout the summer. Belly and Steven also learn the truth. Susannah agrees to begin treatment. Later, Conrad and Belly share a kiss by the beach.

As the summer progresses, Jeremiah and Denise develop a connection. During preparations for a dinner party, sparks fly between them, and Denise confesses she thinks Jeremiah is a "10." Despite Denise planning to move to San Francisco for a startup, they share a kiss, hinting at a possible future.

Conrad surprises Belly by flying to Paris, only to find her returning to her apartment with Benito. Belly reveals she and Benito had split weeks earlier. Conrad is invited to Belly's pre-birthday dinner, where they reconnect. After dinner, they take a romantic walk, kiss in a cab, and spend the night together. Before the night ends, Belly gets anxious and overthinks the situation, causing Conrad to leave. Belly chases him to the train station and tells him, "every version of me chooses you." Conrad kisses her, solidifying their relationship.

The season finale flashes forward to Belly and Conrad spending the summer together in Cousins Beach. There is no indication of a wedding ring, but their relationship is clearly established as the endgame. Despite Conrad showing signs of chest pain earlier, he does not have a heart attack.

Throughout the season, the characters navigate complex emotions, betrayals, and reconciliations, culminating in Belly and Conrad's romantic reunion and a hopeful future together.

At the end of The Summer I Turned Pretty Season 3, Belly faces the emotional climax of her love triangle with Conrad and Jeremiah. After Jeremiah's infidelity is revealed, Conrad confesses his love to Belly, but she rejects him, showing she no longer cares for his indecisiveness. Belly and Jeremiah confront their complicated feelings, and despite the turmoil, Belly chooses to stay with Jeremiah. The season closes with unresolved tensions but a clear shift in Belly's relationships and personal growth.

Now, a detailed scene-by-scene narration of the ending:

The episode opens with Belly responding to a voice message from Jeremiah apologizing for missing their planned beach meeting the night before. Jeremiah is heading out on a boat trip with the boys, including Conrad, who was supposed to be there as well. Belly, trying to compose herself, takes a shower and prepares for the day, but unexpectedly finds Conrad in the kitchen. Conrad apologizes for his earlier drunken confession of love, claiming he was not serious and asking for forgiveness. Belly, hurt and frustrated, tells him he cannot play with people's emotions and firmly states she does not want him at her wedding. Conrad insists he will not back out, but eventually breaks down, admitting he is lying about some things but trying to keep his dignity intact.

Later that night, Belly struggles to sleep and decides to go for a swim to clear her mind. After this moment of solitude, she chooses to be honest with Jeremiah about Conrad's confession. She tells Jeremiah she couldn't marry him without telling him the truth. Jeremiah initially suspects she might want to run back to Conrad, but Belly reassures him she does not. Jeremiah expresses that he never wants to lose her, and Belly decides to stay the night with him. Their embrace is tender but carries a complex emotional weight, hinting at a protective, almost motherly dynamic.

The next morning, Jeremiah is nowhere to be found, and it becomes clear that Conrad's presence and actions have disrupted the fragile peace. The episode ends with Belly caught between the two brothers, her feelings and future uncertain but her resolve to face the consequences of her choices firm.

Regarding the fates of the main characters at this point:

• Belly is emotionally torn but leans toward staying with Jeremiah, showing growth in her ability to confront difficult truths.
• Jeremiah seeks redemption and commitment, willing to face the challenges in their relationship.
• Conrad is left isolated, his confession and actions having alienated Belly, highlighting his ongoing internal struggles.

This ending sets the stage for the final episodes, emphasizing themes of love, forgiveness, and the complexity of family bonds without providing a neat resolution yet. It captures the characters at a pivotal moment of change and emotional reckoning.

The TV show The Summer I Turned Pretty Season 3, produced in 2025, does not have any confirmed post-credit scene. The available detailed recaps and episode breakdowns, including the finale (Episode 8), do not mention or describe any post-credit scenes or additional footage after the credits.

The final episode focuses heavily on the wedding, the tension between the Fisher brothers Conrad and Jeremiah, and Belly's emotional struggles, but no post-credit content is reported in the sources reviewed. There are deleted scenes discussed in other contexts, but these are separate from post-credit scenes and are not part of the official episode endings.

Therefore, based on current information, The Summer I Turned Pretty Season 3 does not include a post-credit scene.

At the beginning of Season 3, Belly's plans for an idyllic summer with Jeremiah are disrupted when she learns a shocking truth that sets the tone for the season's drama.

Season 3 explores Belly's complicated feelings as she navigates her relationship with Jeremiah, her boyfriend, while also confronting lingering emotions for Conrad. The season culminates in intense confrontations and decisions about which brother has her heart.

The memorial garden ceremony for Susannah is a key event where Belly and Jeremiah plan to keep their big news secret from their families, but Conrad is the exception, indicating tension and unresolved issues among the characters.

In a pivotal scene, Jeremiah and Conrad confront each other physically and emotionally over Belly, with Jeremiah demanding Conrad stay away and revealing a heartfelt letter from their mother, which deepens the brothers' conflict and impacts Belly's decisions.

Belly's 21st birthday, spent alone in Philadelphia, becomes a turning point as family disagreements about her future come to the forefront, highlighting her internal struggles and the pressures she faces as she approaches adulthood.

The Summer I Turned Pretty, Season 3 (2025), is generally a coming-of-age drama with themes of love, family, friendship, and personal growth, but it contains some content that may be potentially objectionable or upsetting for children or sensitive viewers.

Potentially sensitive aspects include:

• Romantic and sexual content: Passionate kissing scenes, references to past sexual encounters, and discussions about relationships and feelings occur frequently.
• Substance use: There is a scene where a nonbinary character builds a bong out of an apple, implying drug use.
• Family conflict and emotional intensity: Scenes include a mother slapping her daughter in anger, followed by emotional apologies, as well as tense family dynamics and arguments.
• Disrespectful behavior: Some children treat their parents disrespectfully, and there are references to partying and a house left in disarray after a party.
• Themes of betrayal and breakups: The season explores infidelity and relationship breakups, which may be emotionally intense.
• Mental health and grief: The show addresses mental health and grief, which may be heavy for some viewers.

Overall, while the show is aimed at a teen and young adult audience and features relatable coming-of-age themes, it includes mature content such as sexual references, substance use, family conflict, and emotional drama that may not be suitable for younger children or very sensitive viewers. Parents may want to preview episodes or consider the maturity of their children before viewing.