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Karen (Laura Prepon)
"I think most people have had at least one relationship in their life where they had no perspective, no power and no ability to put the damn thing out of its misery. Someone who treats you terribly and you just keep coming back for more. And then you look back on it years later and go, 'What the hell was I thinking?! What the hell were they thinking?!' For Ted, that was Karen. She’s also a living artifact of Ted's pretentious … years in college," Thomas says. "The difference being, Ted grew up and Karen didn’'t!"
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