Gavin Casalegno discusses his final week on the set of The Summer I Turned Pretty during the premiere, sharing that he was unaware of the exact day he would finish filming. He reflects on the emotional experience and expresses interest in a potential spinoff featuring Sean Kaufman's character, Steven. The interview provides an insightful behind-the-scenes look at his time on the show and future possibilities, capturing his heartfelt sentiments about the production and characters.