The Summer I Turned Pretty book trilogy ends with Belly ultimately choosing Conrad and marrying him, after calling off her engagement to Jeremiah and spending time growing on her own.

Quick Scoop: How the Trilogy Ends

Here’s the endgame across the three books, especially the finale, We’ll Always Have Summer :

  • Belly and Jeremiah get engaged after he cheats on her and then proposes when they reconcile.
  • Belly’s family (and Steven in particular) think she’s way too young to get married and are worried, especially knowing Jeremiah cheated.
  • Conrad is still in love with Belly and tells her she shouldn’t marry Jeremiah, but she initially rejects him and sticks with the wedding plan.

On the wedding day:

  • A letter mix‑up reveals Susannah wrote a heartfelt note about how she’d only ever seen Conrad truly happy and in love when he was with Belly.
  • Jeremiah realizes Belly’s feelings for Conrad haven’t really gone away, they argue about it, and the wedding is called off.

After that:

  • Belly takes time apart from both brothers, studying abroad (in Spain in the books) and having adventures on her own instead of immediately jumping into another relationship.
  • During this time, Conrad writes her letters and they slowly reconnect from a distance.

The epilogue / final pages :

  • There’s a time jump: Belly finishes college, and she and Conrad reunite around her graduation.
  • By the end, Belly and Conrad marry, with Jeremiah having moved on and attending the wedding with a new girlfriend.

So in the book canon , the love triangle resolves with Belly and Conrad ending up together, while Jeremiah steps out of the romantic picture and starts his own new chapter.

TL;DR: If you’re wondering “how did The Summer I Turned Pretty books end?” — Belly calls off her wedding to Jeremiah, grows up and finds herself, then reconnects with Conrad, and the series closes with them getting married.

Information gathered from public forums or data available on the internet and portrayed here.