The O.C. (2003)

S1E19 The Heartbreak

Valentine's Day arrives in Newport, and the town buzzes with excitement for the singles benefit. Luke finds himself smitten with someone new, while Sandy offers Seth some unexpected advice on relationships. The arrival of an old friend from Ryan's past prompts Marissa to confront her emotions openly. Meanwhile, Seth and Summer decide to deepen their bond, taking their relationship to a more serious stage.