Snapchat added u back! Help?

Someone that i added first on Snapchat unfriended me but shes in my added u list and it says she added u back but i didnt add her again,I only added h

Someone that i added first on Snapchat unfriended me but shes in my added u list and it says she added u back but i didnt add her again,
I only added her once but after sometime she unfriended me, why does it say added u back?! And i didnt get a notification for her being in my added u list

or:Someone that i added first on Snapchat unfriended me but shes in my added u list and it says she added u back but i didnt add her again,I only added her once but after sometime she unfriended me, why does it say added u back?! And i didnt get a notification for her being in my added u list

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