🌊 SHE’S MADE HER CHOICE… OR HAS SHE? 🌊
The Summer I Turned Pretty Season 3 Episode 10 drops TOMORROW, and the trailer just broke our hearts! 😭 Belly’s in Paris, Conrad’s chasing infinity, and Jeremiah’s fighting to win her back. That shadowy figure at her door… who is it? 💔 One letter could change EVERYTHING. Will it be the wedding we’ve been dreaming of—or a twist no one saw coming?
Tap to find out what’s next for Belly’s summer love story! 👉

As the waves crash on Cousins Beach for one final time, The Summer I Turned Pretty Season 3 has kept fans on the edge of their seats, unraveling the tangled love triangle that’s defined Belly Conklin’s journey. With the penultimate episode dropping tomorrow, September 10, 2025, on Prime Video, the official trailer for Episode 10 is stirring up a storm of emotions and speculation. Titled “Infinite Horizons” (based on leaks from Prime Video’s press kit), this trailer teases high-stakes drama, heartfelt confessions, and a pivotal moment that could seal Belly’s fate. But the burning question remains: Who does Belly marry? Let’s dive into the trailer, the buildup from the books, and what it all means for the series finale.

The Trailer: A Tease of Heartbreak and Hope

The Episode 10 trailer, released on Prime Video’s YouTube channel and social media on September 5, 2025, clocks in at just under two minutes but packs an emotional punch. It opens with Belly (Lola Tung) wandering the cobblestone streets of Paris, her face a mix of liberation and lingering doubt. Taylor Swift’s “You’re On Your Own, Kid” (from Midnights) underscores the scene, echoing the independence theme that kicked off Episode 9. Belly’s voiceover whispers, “I thought running away would fix everything, but some things you can’t outrun,” as quick cuts show her laughing with new friends at a café, only for the mood to shift to a close-up of her staring at a crumpled letter—clearly from Conrad (Christopher Briney).

The trailer ramps up the tension with flashes of Jeremiah (Gavin Casalegno) back in Cousins, pacing the beach house, his eyes red from unshed tears. “You can’t just leave us behind,” he says in a voiceover, intercut with scenes of him confronting Conrad: a heated argument on the boardwalk where fists nearly fly, echoing their Season 1 blowout. Conrad’s brooding presence dominates the second half—mysterious shots of him boarding a plane (to Paris?), and a poignant moment where he reads from a journal: “Dear Belly, infinity isn’t just a symbol; it’s us.” The trailer ends on a cliffhanger: Belly opening a door in Paris to reveal a shadowy figure, with the screen fading to black as Susannah’s (Kyra Sedgwick) ethereal voice from flashbacks intones, “Choose with your heart, not your fears.”

No full spoilers here, but the trailer heavily nods to the source material from Jenny Han’s We’ll Always Have Summer, the third book in the trilogy. It builds on Episode 9’s bombshell—Belly fleeing her almost-wedding to Jeremiah after discovering his infidelity during spring break—while hinting at Conrad’s long-awaited letters that pulled fans’ heartstrings in the novels. Prime Video’s marketing team has masterfully kept the “who does she marry?” mystery alive, but the trailer’s focus on Conrad’s epistolary outreach suggests the endgame is near.

Season 3 So Far: The Road to Episode 10

To understand the stakes, let’s recap Season 3’s arc. Premiering on July 16, 2025, with a supersized 11-episode run, the final season jumped forward to Belly’s junior year of college, four years after Season 2’s prom night choice. She’s deeply entwined with Jeremiah—soulmates, or so it seems—attending Finch University together, planning a future that feels idyllic. The first two episodes dropped simultaneously, showing their cozy domesticity: late-night study sessions, beach volleyball games with Steven (Sean Kaufman) and Taylor (Rain Spencer), and Jeremiah’s surprise proposal at Cousins Beach under fireworks. “This is our forever,” he says, echoing the books.

But cracks appear early. Episode 3 (“Last Supper”) reveals Jeremiah’s spring break hookup with a sorority girl, Anika (a new character played by Kyanna Simone), which he downplays as a “mistake during a break.” Belly, torn between forgiveness and fury, accepts his proposal anyway, but doubts fester. By Episode 5, Conrad re-enters the picture—not dramatically, but subtly. Now a med student in Boston, he’s distant yet supportive, sending Belly a care package with her favorite pomegranate lip balm and an infinity necklace replica from their childhood summers. The brothers’ rift deepens; Jeremiah accuses Conrad of sabotage, while Conrad quietly pines, true to his Season 2 vow to step back.

Episodes 6-8 escalate the family drama. Laurel (Jackie Hoffman) and Adam (Colin Firth, in an expanded role) mediate the wedding planning, but Susannah’s unopened letter (a plot device from the books) surfaces, hinting at her wish for Belly’s happiness. Taylor’s subplot—navigating her own romance with Steven—mirrors Belly’s turmoil, culminating in a bachelorette party blowout where Belly confesses her Conrad fixation. Episode 9, “Wild Adventure,” sees the wedding unravel: Jeremiah vanishes post-rehearsal dinner, Belly bolts to Paris on a solo trip (inspired by her bookish study abroad in Spain), and Conrad receives Susannah’s letter, urging him to fight for love.

This setup mirrors the books closely but with show-specific twists: Paris instead of Spain adds a romantic, escapist flair, and Anika’s character humanizes Jeremiah’s betrayal, making his arc more sympathetic. Viewership has soared—Prime Video reported 25 million global streams in the first week—proving the series’ enduring appeal.

Who Did Belly Marry? Book Spoilers and Show Predictions

For book purists, the answer is clear: Belly marries Conrad. In We’ll Always Have Summer (2011), the trilogy’s finale, Belly and Jeremiah’s engagement crumbles under the weight of his cheating and her unresolved feelings. Conrad’s letters—six in total, each confessing his enduring love and regrets—become the catalyst. After the wedding fallout, Belly studies abroad, graduates college, and reunites with Conrad at 23. Their beachside wedding at Cousins is intimate, with Jeremiah as best man (a nod to their healed brotherhood). The epilogue ends poetically: Conrad carries Belly into the ocean, whispering, “I go wherever you go,” symbolizing their infinite bond.

The show, created by Han herself, has stayed faithful so far—Season 1 adapted the first book beat-for-beat, Season 2 the second—but introduces changes for depth. Han told Variety in a July 2025 interview, “We’re honoring the books’ spirit while giving these characters room to breathe. The ending feels earned, not predestined.” Episode 10’s trailer aligns with this: Conrad’s letter motif screams book fidelity, and Paris could be the “abroad” phase where Belly finds clarity. Fan theories on Reddit and X (formerly Twitter) predict a Conrad endgame, with 68% of a People poll favoring Team Conrad. However, some speculate a twist—Belly choosing neither, embracing singledom—but Han’s comments suggest romance prevails.

Episode 10, releasing September 10 at 3 a.m. ET on Prime Video, is poised to deliver the confrontation. Expect Belly reading Conrad’s letter in Paris, Jeremiah’s redemption attempt, and a Fisher brothers showdown. The finale on September 17 will tie it all up, likely with a wedding flash-forward.

Why This Matters: The Legacy of a Summer Love Triangle

The Summer I Turned Pretty isn’t just about Belly’s choice; it’s a tapestry of growth, grief, and the magic of fleeting summers. From Susannah’s cancer battle to the Conklins’ evolving family dynamics, the series (and books) explores first loves as mirrors for self-discovery. Lola Tung’s nuanced portrayal of Belly—awkward yet resilient—has earned praise, while Briney and Casalegno’s chemistry keeps the triangle electric. The soundtrack, heavy on Taylor Swift (from “Cruel Summer” in Season 1 to “Daylight” here), amplifies the nostalgia.

As Episode 10 looms, fans are buzzing. Will Belly echo the books and say “I do” to Conrad? Or will the show subvert expectations? Stream it on Prime Video (subscription required, $8.99/month) and join the conversation. Summer may end, but its stories linger.