The West Wing: Charlie Young & Zoey Bartlet

Dulé Hill as Charlie & Elizabeth Moss as Zoey © NBC Photo: WB

Type of Relationship: Romantic (starting around December/January of 2000)
First Met: Around November 1999 [#5]: The first night they met, Josh had to tell Charlie, "This is a girl, Charlie. You don't have to call her Ma'am."
But Charlie works incredibly long hours and there isn't as much time for the relationship as Zoey thinks there should be, although she recognizes that he must do his job, especially when they are traveling with the President. While flying to L.A., he tells her:: "I don't know if I'm going to be as attentive on this trip as you'd like."
"Em. That's all right: you're working."
"Well, I've been trying to listen to some of the many lessons you've been giving me on how to be a better boyfriend and I know that attentiveness. . . ."
"No, this is one of the times when it's okay."
"It's hard to tell the difference between those times and the other times."
"I know. Doesn't that suck for you?"
"A little bit, Yeah."[#16]
The White House gets threats from White Supremacists due to the relationship and the President has to tell Zoey, that she and Charlie can't go to a club opening. When she tells Charlie, he gets upset. Later, listening to Danny [#17] Charlie realizes that dating the President's daughter can't be like dating another girl:: "I came to apologize," Charlie tells her.
"You left me sitting in the restaurant."
"I feel bad about that."
"Are there other things you feel bad about, too."
"Yes"
"Name them, please."
"I. . . . off the top of my head, I wouldn't be able to give you a comprehensive list. Just suffice it to say that anything I've done to upset you --- even if it only exists in your kind of confused little mind --- I really apologize for." [#17]
Elisabeth Moss as Zoey Bartlet NBC Photo by: Eric Liebowitz Zoey returns in #411 "Holy Night" with a "French Royalty" boyfriend.: "You are the worst kind of snob," Zoey tells Charlie.
"Well,I think there are snobs that are way worse, but thank you," he replies.
Later Charlie pursues Zoey and she tells him,: "You've been out with plenty of women since we broke up and each time ---"
"I have not."
"You don't think I know when you go out? Every college student in this city wants to tell me something I don't know. And every time you've gone out, I've been supportive."
"Supportive how? I didn't even know you knew."
"That's how!"[#420]
Query: Why doesn't Zoey appear more often or why hasn't she appeared recently (whenever).