Ok so what should I say?

[First]

This kids account on fb got hacked by his ex gf but I'm not sure if that who it is.
Everyone saids it is.
Anyways should I report this to his mother?
He told me that he loves me i thought it was a lil werid at first but then I checked on his timeline it said he got hacked.
I asked the person random questions
Like whos your best friend
What website do you like
But the hacker already knows that I know
I said something to his ex gf She said id care leave me alone please
What should I ask next

[RE]

It is really none of your business. And you won't be able to find out who did it by asking questions. Advise him to report it to fb, close the account and reopen another. Why on earth should YOU report it to his MOTHER?