A great moment from the episode "Yesterday."
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Everything was going swimmingly with these two just a couple of episodes ago.
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The macho intern is conflicted about a patient.
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Grey's Anatomy Season 2 Episode 18 Quotes

MARK: "Come on Derek, can't we just move past this?"
DEREK: "Go to hell."
MARK: [gestures to Addison] "You forgave her?"
DEREK: "No, I haven't forgiven her. And with you, I'm not legally obligated to try."

[Referring to Meredith] "I saw her first!"

GEORGE