When you don't cry for him/her..
When you stop thinking about him/her..
When you could go start laughing again..
When you start liking someone else..
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(and if its not a clean break up...)
u have finally moved on if you dont feel any hatred toward him/her after everything...
to make it more simple...
WHEN YOU DONT CARE ABOUT A SINGLE THING ABOUT HIM/HER....
it means youve finally moved on...