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Justin Bieber, Ariana Grande

Twitter

OK, now calm down, Beliebers. No need to bust out the hysterics.

In a deafening smack! heard 'round the Interwebs, Justin Bieber planted a sweet kiss on Ariana Grande, evident in a cute twitpic that the Victorious actress posted—but then seemingly deleted—from her Twitter feed.

"You're crazy and nonna says thank you, she loves you," the 20-year-old Grande captioned the pic, which she tweeted to the "Boyfriend" crooner and in which she gave a shout-out to her granny, who seems to be a Belieber herself.

The twitpic was quite the hit: Within three hours, it had been retweeted 27,300 times

But soon after the actress posted the tweet, she appeared to have had a change of heart, pulling it down and then following it up with a missive that seemed to hint at the responses she got to her Biebs-bussing twitpic.

"Everyone, girls are allowed to be friends with guys. I'm a lady. Chill out," she wrote.

Justin Bieber

Instagram

Still, she was more than happy to share her family's run-in with the crooner: Earlier in the day, Grande tweeted a photo of her grandparents meeting the pop star at a fan event.

"Nonna met her love!!! Nonna, Grandpa and @justinbieber :)" she wrote.

Ariana Grande

Instagram

Lest the rumor mill go into overdrive, Grande has made sure to let everyone know she is happily committed: The Nickelodeon starlet has been dating Jai Brooks, an Aussie star famous for being a member of the YouTube comedy group The Janoskians.

Earlier this week, Brooks posted a sweet message on Instagram celebrating their 10-month anniversary.

"This girl means so much to me. Not many long distance relationships [work out], but ours is different. We are not only [each other's] boyfriend/girlfriend, we are also [each other's] best friends," he wrote. "I am the luckiest guy on this earth and really have found one of a kind."

See, Beliebers? All is good. All is good.

—Additional reporting by Lindsey Caldwell