Justin Bieber can’t keep his hands off of Ariana Grande onstage

Justin Bieber joined Ariana Grande for a super-steamy performance this week on her Honeymoon Tour's stop in California - and it's raising eyebrows on social media. The Canadian singer surprised concertgoers by showing up to croon the second verse of Ariana's “Love Me Harder,” which is originally sung by another Canadian artist, The Weeknd. The pair followed it up with a harmonized version of Justin’s hit, “As Long As You Love Me.”

The young pop stars appeared to have great chemistry, as 21-year-old Justin wrapped his arms around Ariana (also 21) and nuzzled into her neck.

CLICK ON THE IMAGE TO VIEW THE GALLERYJustin gave Ariana a tender embrace onstage

It’s easy to see why the Stratford, Ont. hit-maker was so besotted. The pint-sized songstress looked fantastic in a sparkly mini-skirt and crop-top combination paired with matching heels and her signature cat-ear headband.

Justin, meanwhile, wore an oversized black t-shirt, leather pants and grey high-top sneakers for the appearance, at one point lifting up his shirt to expose his abs for screaming fans.

The pair appeared to have great chemistry

Not everyone was a fan of the show, however. Ariana’s 27-year-old rapper boyfriend, Big Sean – who was in Canada at the time of the concert – caught wind of Justin’s embrace and reportedly tweeted: “This kid is about to learn not to touch my girl like that. Beliebe that."

Ariana and Big Sean kiss on a theme park ride

He’s since deleted the tweet and, for now, all seems to have been forgiven between the three pals. After the show, Justin tweeted his own message, writing, “Love the stage. Thanks for having me @ArianaGrande and thanks LA. Gotta tour again soon :)"

It’s not the first time Justin has made headlines for crashing one of Ariana’s shows. Last week, he performed with the pop starlet in Miami, during which he fumbled the lyrics to “Love Me Harder.”

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