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Baby, baby, baby oh!

As long as Justin Bieber keeps Instagramming pics of his ripped abs, we're going to keep posting them here! Not only does he have the #1 song on iTunes right now in over 50 countries, but he's #1 in our hearts...

On Monday the 19-year-old singer released his new single "Heartbreaker," and he tweeted, "It's a song for people going through 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." I mean, that has to be about Selena Gomez, right?