[Warning: The below contains MAJOR spoilers for The Summer I Turned Pretty Season 3.]

The Summer I Turned Pretty has finally returned with the first two episodes of Season 3, and with it comes several book changes as the show adapts Jenny Han‘s novel, We’ll Always Have Summer, the third book from her trilogy about Belly (Lola Tung) and her complicated dynamic with the Fisher brothers, Conrad (Christopher Briney) and Jeremiah (Gavin Casalegno).

While the season appears to be following the basic structure of Han’s book, which finds Belly in college, deep into her relationship with Jeremiah, only time will tell how many big changes are in store. A few have already been revealed, though, and we’re breaking them down below. Scroll down for a closer peek, but beware of book and show spoilers below.