AceShowbiz -

Exactly as he promised his Beliebers last week, pop heartthrob Justin Bieber debuted his eagerly-awaited new song "Heartbreaker" October 7, as part of his "Music Mondays" project. The Maejor Ali, T-Minus, and Chief Tone-produced love ballad kicked off the 19-year-old singer's 10-week series where he will release a new song at the break of each Monday from now until December.

"Less than 24 hours. Midnight est #MusicMondays #10weeks #heartbreaker r u ready??!!" Bieber wrote on Twitter just before releasing the tune he had been teasing his fans about since July. "These songs are different. These are my #journals."

Indeed, "Heartbreaker", from the song's lyrics to the way Bieber sang it, comes across as a very personal song from the young music superstar, one that most likely speaks of his highly publicized romance with Selena Gomez. Especially when he drops the words, "I know it hasn't been easy for us to talk with everyone being around," it references his much scrutinized relationship with the "Come and Get It" singer.

As Bieber himself revealed, "It's a song for people going through a heartbreak - like I was when I wrote it. It means so much to me to be able to share what I was, and still am going through, with my fans. I'm very proud of this song and I hope it gives my fans some insight into my heart."