How should i sign in others id with knowing password?

Question

one of my friend is cheating so many girls so i want to save that girls i want to sign in their id and inform them that he was cheating felloow so i need to know how to sign in others id with out knowing password how its possible tell me please help me

Answer 1

Mind your own business!

You can't, that's why we have PASSWORDS!

Answer 2

You shouldn't do something like that, even if your intentions are good.

Answer 3

its not create id so close it wont get notice or watch friend sign in

Answer 4

You shouldn't even dream of doing that.  It's unfair to those involved, even if your intentions are good.  Please...get this out of your head if you and find another way of informing them.