October 06, 2015 11:20 AM

There’s no breaking free of this smooch.

Ariana Grande reunited with her Victorious costar Elizabeth Gillies, and the longtime friends locked lips in a moment that left both 22-year-olds squealing with laughter.

“It has to be pretty though,” Gillies says in a video posted to Grande’s Instagram on Monday, counting down to the kiss.

In June, the Sex&Drugs&Rock&Roll actress spoke to PEOPLE about being close with Grande ever since they got their big breaks in the 2008 musical 13.

“She’s like blood to me, she’s like my sister. So unless we have a massive falling out, nothing will be happening there,” she said, laughing. “We lived together, I’ve known her since what feels like the beginning of time.”

The celebrities showed off their impressive pipes again in Victorious, which aired from 2010-13.

“Even when I was on Nickelodeon, I talked and had the sense of humor of someone much older than me, so it’s fun for me to kind of be myself more on this,” Gillies said of her decidedly more adult role on the FX show. “Not that I wasn’t then – I was younger! I did Victorious when I was younger, so I think it’s just a natural progression.”

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