Image Credit: WWD via Getty Images Gavin Casalegno might be a part of one of the biggest love triangles on screen, but off screen, his heart belongs to one person: his wife, Cheyanne King Casalegno. The Summer I Turned Pretty actor plays Jeremiah Fisher in the hit Prime Video series, which is ending with its third season. By his side throughout the season 3 press tour has been Cheyenne, and though some TSITP viewers are heartbroken that he's taken, real fans of Gavin's are happy that he found the love of his life.