Justin Bieber is proving to be the sweetest "Boyfriend" ever not only by singing a song dedicated to Selena Gomez but penning one for her. It's the moment all "Jelena" fans have been waiting for and it's finally here.

A song written by Justin Bieber for Selena Gomez is even better than a collaboration fans have been pushing them to do.

Despite being pushed by "Beliebers" to collaborate with girlfriend, Selena Gomez, Justin Bieber still hasn't. Instead, the 18-year old has worked on collaborations with Adam Levine, Taylor Swift and Kanye West of which are set out to appear on his next album. Now, Justin has announced even better news than that of collaborating with Gomez.

The Canadian crooner has actually written and produced a song for his beau, Selena Gomez. How and when did this even happen? And why has everyone only heard of this now? Well, in an interview with Canada's New Music Live, it was "Black Eyed Peas" Will.I.Am that revealed the news.

According to the singer, Bieber had tapped him on the shoulder during a flight following the Teen Choice Awards of 2012. The two singers got talking and that's when Bieber opened up on the song he had written for Gomez.

"Yo, I want to show you this song I produced and wrote. I'm really excited about it because it's one of the first songs I produced by myself," said Bieber before revealing, "The song was dope. Yeah, I wrote it for Selena. It's great.' And it was really awesome. It was, like, really, really dope."

Will.I.Am certainly agreed the song was awesome. And with the approval of the "Black Eyed Peas" singer it sure is going to be one song "Belieber" and "Jelena" fans are definitely on the look-out for. For now, fans of Justin Bieber best be content with the current songs he is promoting on his "Believe" album of which a few have already hit the top of Billboard.

Selena Gomez on the other hand is busy with a few films and getting back to making music. The 20-year old is set to release two music albums this year. Hopefully, one of them contains Justin Bieber's very won song written for her.