[@deyinger]

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Well, technically Renly was her Senpai, not her Boo.

Also, he was kind of a traitor who attempted to steal the throne from his older brother. If Stannis hadn't killed Renly, Renly would have killed him. Remember, this is the same Renly whose original plot to take the throne was to take the palace by surprise, murder all the guards, kidnap the Queen's children, and hold them hostage. How could Brienne serve such a vile man?
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