How to open facebook without leaving a clue that we opened it

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Wht he has done can u provide details ?
i thnk he had done smthng vid location history
i dont know how but if i open it on my moble..he comes to know dat i've opnd
umm..come to chat box ,
can u tell me wat sttngs he might hav done in my tab

Answers

2015-11-06T03:07:44+05:30
Open incognito tab in your browser before open facebook....
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