The OC Season 1 Episode 14 (12/17/03)
-Marissa tells Ryan she loves him. He says thank you and things get awkward.
-Oliver invites Marissa to his New Year's Eve Party and although Ryan asks her not to go, she and Summer attend.
-Kristen's young sister Hailey arrives and stirs up trouble by throwing an out of control party while Kristen and Sandy are away.
-Hailey owes a girl $3,000 and there's almost a brawl at the party. Ryan helps kick everyone out then runs to find Marissa before midnight.
-Oliver persuades Marissa that Ryan may not really love her and she begins to fall under his charms.
-Ryan runs in just as the ball drops and Marissa goes to him. He tells Marissa he loves her and they kiss as 2004 begins.