The Summer I Turned Pretty has stuck pretty close to Jenny Han‘s book series — until season 3 when the show introduced some of the biggest onscreen changes.

Based on Han’s three novels, The Summer I Turned Pretty is focused on a love triangle between Belly (Lola Tung), Conrad (Christopher Briney) and Jeremiah (Gavin Casalegno). The current season is slated to be the show’s last as Belly finally makes a decision between the brothers.

The author — who previously brought her To All the Boys I’ve Loved Before series to life with three Netflix films — has discussed how she approached evolving her stories on screen.

“There are surprises. And there are things that aren’t exactly like the books,” Han told Entertainment Weekly in March 2025 about the “satisfying” ending for everyone. “A successf

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