Seth's long-time crush on Summer blooms into a memorable and deep romance throughout all four seasons of The O.C. The couple faces highs and lows, from their first kiss to a rocky breakup, while always caring deeply about each other. Summer and Seth's relationship grows as they navigate college life, marriage proposals, and finally tying the knot in the series finale.

On the drama series The O.C., Summer Roberts (Rachel Bilson) and Seth Cohen's (Adam Brody) relationship spans all four seasons and features highs, lows, and many memorable moments. Since Summer is cheerful, wealthy, and popular, and Seth is a self-proclaimed nerd who enjoys video games and spending time with his parents, neither character expects the romance to happen. Ryan Atwood's (Ben McKenzie) arrival in Newport Beach is the catalyst for Seth and Summer sharing their feelings and becoming each other's soulmates.

Summer and Seth have one...