Justin Bieber celebrates his new single. (Kevin Winter/Getty Images)You've heard of Justin Bieber's album My World 2.0? Well get ready for the second version of Justin Bieber. This new, more mature Biebs - hello, he turned 18 on March 1! - has a slower musical style, even when he raps, based on the new single "Boyfriend," which was released Monday. While it's been out for less than a day, the song is already the top download at the iTunes store. The track is the first single from Justin's upcoming album, Believe, which is expected in June. As he said on Ryan Seacrest's morning radio show Monday, choosing "Boyfriend" as the lead off song for the project was "a really hard choice." "We had so many songs and so many uptempos that we could've released. I thought we should slow it down a little," he said. "It's just something a little bit more mature, but it's also something that I think I'm ready for." The teen dream explained to Seacrest that the lyrics, which were co-written by Bieber himself, singer Mike Posner ("Cooler Than Me"), Matthew Levy, and Mitchell Musto, describe the kind of significant other he thinks every guy should be - and perhaps the kind of guy he is to 19-year-old lady love Selena Gomez?
While "Boyfriend" definitely has an older vibe than say, "Never Say Never" or "Baby," it's not too grown-up. After all, "Toy Story's" Buzz Lightyear gets a mention!
Justin thought the tune was the "perfect single" because it gives fans a taste of the new and improved Bieber. "[The album is] kind of classic, I feel, because the songs won't get old," the Canadian native said. "The music is very fresh, but I'm taking a lot from old school music, like a lot of Michael Jackson inspired this album, a lot of old R&B, a lot of old pop."
The singer's all grown up. (Lester Cohen/WireImage) If you're not a fan of the former YouTube sensation, now is the time to brace yourself, because the teen is about to be everywhere. Besides his album, Bieber revealed that he'll be touring to promote its release and he's also working on another fragrance and - get this - a movie script with rapper/underwear model-turned-Oscar nominee Mark Wahlberg! I can feel Bieber fever breaking out all over again...
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