Editor's Note: The following contains heavy spoilers for We'll Always Have Summer, the book Season 3 of The Summer I Turned Pretty is based on.After a two-year wait, The Summer I Turned Pretty will be officially returning this July for its third and final season. Season 3 of the teen drama is set to closely follow the events of We'll Always Have Summer, the third book in Jenny Han's trilogy on which the series is based. Season 2 ended with Belly (Lola Tung) choosing to be with Jeremiah (Gavin Casalegno), and Conrad (Christopher Briney) in turn taking back his most recent confession of his feelings for her. Now, two years later, Belly will have to reevaluate her decision after Conrad reenters her life again.