How to convince my cousins that these famous people on facebook are fake.?

-So im 15 my cousin is like 12 and she thinks that selena gomez and justin bieber talk to them on facebook. I told her dude theyre fake its not them, and she said but they have pics that look real. And i said they get them from the internet. And she said no its really them. What gets me worried is that last night she was texting 'justin bieber'. So now this creep has her number. How can i convince that its not really them. Shes been talking to them for like three weeks on facebook and texting. Also she told my little cousins that are like 5 and 6. So they are all excited cuz they talk to 'Justin bieber' and 'Selena gomez'.same thing happened to my lil sister, but what i did, is i checked what was her password and i deleted her facebook account, i think u have to be 13 and older to get a fb account so i dont think her parents would be mad if u did, and no those kids arent 'idiots' they just dont understand they are still learning. there growing up.
Wow your cousin is a idiot just tell your parents to tell her parents and if she gets kidnapped and touched you can dance and say I told you so. Also a phone at 12 spoiled brat
Go to their Youtube pages. It has a link to their real Facebooks & once she sees that the links Selena & Justin have on their youtube are not the same ones shes been talking to she might believe you (:
Please tell their parents.
Maybe you should tell that to their mother. Mother is always right.
Let them be idiots
Wth, i would seriously delete her facebook or delete Selena and Justin of her friends. You should take her phone and delete him!

This is Selena real YouTube, and i think she mentioned in one of her videos that she doesnt have facebook, try looking for that. http://www.youtube.com/user/SelGomez?ble鈥?/a>

And Justin bieber has one real facebook but its a like page. http://www.facebook.com/JustinBieber?ref鈥?/a>



Tell her mum about this!