Fans of 'The O.C.' are buzzing after a sweet reunion between two of its key stars. Peter Gallagher and Kelly Rowan, who played the much-loved couple Sandy and Kirsten Cohen on the show, recently got together. Gallagher shared a moment with his onscreen wife, Kelly Rowan, in an Instagram post on July 3. This reunion comes almost two decades after the popular series aired its final episode. The post quickly delighted followers, bringing back memories for many who watched the show. It's clear that the chemistry between these two stars still resonates with fans.