It turns out Justin Bieber and Selena Gomez were doing more than just sneaking kisses and creating steamy dance routines together during the weekend they finally reunited. According to the Biebs' fans, they were also working on their brand new duet for a song they wrote together!

Justin and Selena co-wrote the song "Unfamiliar" and the pop star is already sharing details about the upcoming track with fans. One fan in particular, Giselle Mosqueraa, had a pretty special encounter with Justin and got to hear the new song, tweeting the world details about her experience, saying he even sang along with it as it was playing.

Another fan, Celina, mentioned how Beliebers shouldn't be hating on the fact that Justin and Selena wrote a song together because it was pretty obvious how excited he was, saying, "You should've seen his face telling us about it. He was so happy."

Evidently the duet won't be out for a few months, but if it's as amazing as his lucky fans are making it sound, we're sure everyone is going to absolutely love it — even if this means Jelena is back together for good!

Are you surprised Justin and Selena wrote a song together? Let us know in the comments!

Love J-14? Be sure to subscribe to our YouTube channel for fun, exclusive videos with your favorite stars.