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Justin Bieber And Selena Gomez Teamed Up For A New Song And -- Wait, What?!

'Strong' premiered Saturday on Drake's OVO Sound Radio show.

Everyone needs to sit down and take a second here because Justin Bieber and Selena Gomez have just released a song together. Yes, this is really happening.

The track, titled "Strong," premiered on Drake's OVO Sound Radio show on Beats 1 Radio Saturday night. By all accounts, it's a real duet, with the former couple trading lyrics throughout the song.

"What should I do? Should I go? / Who do I talk to? Nobody knows," Bieber sings, while a little while later in the tune, Gomez has her turn: "Wishing I was better at this damn thing / Cause it's just been too long and I can't change."

So, here comes the bad part: Since it wasn't an *official* release, all uploads of "Strong" are being quickly scrubbed from Soundcloud, YouTube and other streaming sites -- which is very much a bummer. And it's not on Selena's new album, Revival, which came out Oct. 9.

But Justin's new album, Purpose, is due out Nov. 13, and so far, no tracklist has been released, meaning "Strong" could very well be included on the album. Or, you know, it might not be, and we may never hear it again -- but let's hope that's not the case.

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In the past few weeks, the now-split pair have talked candidly about their relationship. Justin told Complex in September that falling so fast in love at a young age was "too much," and that because the two shacked up together when they were only 18 years old, it felt very much like "a marriage kind of thing."

Selena, meanwhile, spoke very highly of Justin to The New York Times and said that now -- given his reinvention and maturation -- the general public is seeing in Justin what she "always saw in him."

Here's hoping we'll be hearing the soft, undulating guitar and sexy dual vocals of "Strong" via a proper release very, very soon.