Began: Prior to " Premiere" (1.01)
Ended: " The Debut" (1.04)
Reason: Luke got jealous of how much time Marissa and Ryan were spending together.
Began: " Premiere" (1.01)
Ended: " The Perfect Couple" (1.10)
Reason: Marissa's attraction to Ryan evolved into an actual relationship.
Began: " The Perfect Couple" (1.10)
Ended: " The Rivals" (1.17)
Reason: Marissa believes that Ryan is overreacting over her friendship with Oliver Trask, who had developed an unhealthy obsession with her.
Began: " The Nana" (1.23)
Ended: " The Ties That Bind" (1.27)
Reason: After discovering that Theresa is seemingly pregnant with Ryan's child, as the two had been in a relationship during Ryan and Marissa's break-up, Ryan decides to move back to Chino with Theresa. A heartbroken Marissa accepts his decision, but falls back into her alcoholic behaviors upon his departure.
Alex Kelly Edit
Began: " The Lonely Hearts Club" (2.12)
Ended: " The Blaze of Glory" (2.16)
Reason: Alex realizes that Marissa still possesses feelings for Ryan. Following their break-up, Alex moves away from Newport and back home with her parents to go back to school.
Kevin Volchok Edit
Began: The Undertow (3.18)
Ended: The Party Favor (3.23)
Reason: Marissa caught Volchok making out with another girl at The Harbor School prom.