ARIANA GRANDE MAY NOT HAVE A THING FOR JUSTIN BIEBER, BUT HER GRANDMA DEFINITELY DOES [PICTURES]

Hell hath no fury like a jealous Belieber — and that’s a lesson Nickelodeon star Ariana Grande learned the hard way after tweeting a cute photo of Justin Bieber kissing her. But lest anyone get the wrong idea, don’t worry. It’s kind of a family affair.

Grande, whose debut album drops next month, has been opening for the Biebs on his Believe tour. And on Wednesday, she tweeted:

My grandmother is now in love with @justinbieber.
— Ariana Grande (@ArianaGrande) August 8, 2013

Justin replied with a message for grandma:

@ArianaGrande tell grandma I said whatup. Lol. Welcome to the tour
— Justin Bieber (@justinbieber) August 8, 2013

After Ariana’s followers were all “details, please,” she followed up with a photo (slight aside but come on, kid, at least take your shades off for the seniors):

Nonna met her love!!! Nonna, Grandpa and @justinbieber :) pic.twitter.com/D7kClTFB2h
— Ariana Grande (@ArianaGrande) August 8, 2013

And Justin responded thusly:

@ArianaGrande post that pic and tell your grandma she is a cutie
— Justin Bieber (@justinbieber) August 8, 2013

Ariana then unwittingly painted a target on her forehead by posting this pic of Justin smooching her on the cheek:

@justinbieber you're crazy and nonna says thank you, she loves you pic.twitter.com/C5DthoPIXl
— Ariana Grande (@ArianaGrande) August 8, 2013

The backlash was apparently so fierce that she later deleted the tweet and scolded the angry mob:

Everyone, girls are allowed to be friends with guys. I'm a lady. Chill out.
— Ariana Grande (@ArianaGrande) August 9, 2013

Stand down, Beliebers. In case you didn’t know, Ariana’s been dating Australian actor Jai Brooks (from the YouTube comedy group The Janoskians) for nearly a year. And judging by the adorable stuff he posted about her on Instagram earlier this week, they’re still going strong.