Charissa

Charissa
Charissa (Mar/issa + Char/lie) is the relationship of Charlie and Marissa

Auditions
Marissa overhears Charlie telling Kitty that his jacket looks good on her. She then interrupts their conversation and tells Kitty that she is dating Charlie. Charlie doesn't really confirm it, implying that he doesn't see them as a couple yet, but Marissa takes Charlie's jacket from Kitty and caresses him in the hallway. They are seen together on the football field at the end of the episode, where Charlie is seen serenading Marissa.

The Callbacks
Charlie invites Marissa to The Meso-Teens as he wanted her to sing with him. Later, Marissa has started up a club called the Left Behind Club, which Charlie joins and invites Kitty to. Marissa leads the meeting at The Club and has a discussion about the rapture while Charlie and Kitty talk between themselves. After the fake rapture that was committed, Charlie meets with Kitty at the lockers about what happened. Marissa meets up with them, and Charlie calls off their relationship. Marissa blames this on Kitty, and hands back Charlie's jacket stating, "Obama's gonna lose." Then she slaps Charlie in the face and storms away in tears.