Image Credit: Amazon MGM Studios/ Prime Even if you're not a fan of The Summer I Turned Pretty, you've most likely heard of one of Gen-Z's latest heartthrobs Gavin Casalegno. The actor has played Jeremiah Fisher for three seasons, and though the show is concluding with season 3, Gavin is still booked and busy for the foreseeable future. Below, Hollywood Life has rounded up five facts about Gavin, his career and background.