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See Photos of Former Celebrity Besties Before Their Very Public Feuds

Nothing lasts forever — especially celebrity friendships. Whether they've grown apart or have had messy, public feuds, one thing is for certain — these former friends are pals no longer.

Although Taylor Swift and Katy Perry might hate each other now, let's take a trip down memory lane and relive their better days.

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Click through the gallery to see throwback pics of celebrity best friends before they called it quits.