Fitz, Cyrus, & Olivia on the campaign trail in a flashback on Scandal. "The Trail" is the sixth episode of the show's first season.
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Scandal Season 1 Episode 6 Quotes

"What kind of a coward was I to marry her and not wait for you to show up?"

Fitz

Olivia: "You cheated on your mistress with your girlfriend. Let's just leave it at that."
President: "She wasn't my girlfriend. Don't you ever call yourself a mistress. We both know better."