Justin Bieber
Justin Bieber and Ariana GrandeInstagram/ Screenshot

A Justin Bieber-Ariana Grande duet is in the making, and the singers confirmed the news on Thursday, shortly after the Canadian pop star tweeted a message congratulating Grande on the success of her new single "Problem."

"Congrats @arianagrande on your number 1 song. #arianabieberduet ??" Bieber wrote, along with a link to his Instagram account that shows him hanging out with Grande at a studio.

"Problem" was released on iTunes on April 28 and became the fastest record to reach number one in the chart's history. The single reached the top of the charts in just 37 minutes.

Grande immediately thanked Bieber for his wishes and noted that their secret is now out. Their manager, Scooter Braun, too, tweeted about the possibility of a duet saying, "Always expect the unexpected. Home team. @justinbieber @arianagrande wow!!!!"

The news of their collaboration has managed to cause an uproar on Twitter with both Beliebers and Arianators tweeting their excitement.

 Check out some of the tweets below.

"Ariana and justin being in the studio together gives me life bc I needed this more than anything and now we're getting it #bieberarianaduet" - @buteratease

"Ariana won an award. Ariana sang live at the iHeartRadio Awards. Ariana is having a duet with Justin Bieber. This night, is amaZing." Brendan ♡ ‏@getagrande

"IVE BEEN FANGIRLING SINCE MORNING BC ARIANA BIEBER DUET" HE FOLLOWED ME♡ ‏@MaleehaBelieber

"WHAT'S BETTER THAN JUSTIN BIEBER FT ARIANA GRANDE? JUSTIN BIEBER AND ARIANA GRANDE DUET, I REPEAT, IT'S HAPPENING" A m a n d a. ♔ ‏@dreamtobieber

This news comes just a few weeks after multiple reports stated that Bieber and Austin Mahone have put behind their reported rivalry over the latter's friendship with Selena Gomez, and recorded a song together.

"Justin invited Austin to come and hang out and record a song that he thought Austin would be great on. So they spent a couple days working in the studio and had a great time. And we're told that Justin really respected him," an E!Online source said, KIIS 1065 reported.

[ED:VS]