Justin Bieber's second book "Just Getting Started" hit stores today where he is expected to open up about his career and private life, including the paternity lawsuit brought against him in 2011.

Bieber told his fans through Twitter that he "got a lot to say" in his new book "even about [Mariah] YEATER." This would be the first time he addresses the paternity lawsuit in public.

"Just Getting Started" will also reveal Bieber's critics against "aggressive" paparazzis who shout insults at the singer and his family to get a rise out of him.

"Whenever you see me getting angry or upset in the media what you don't get to see on camera is how those people came up to me and said things like, 'Hey Justin, why are you such a punk lately?', 'Your mom is ugly', and, 'Your little brother and sister are ugly babies," Bieber says in the book, according to an excerpt published by Sugarscape.

In an interview with Ryan Seacrest for the "Today" show aired today, Bieber talked more about the book and the direction he wants for his career.

"I feel like I just don't want to be another teen heartthrob. I just think that that just annoys me. To think that's what people will - will think of me - or, like, I just want to prove people wrong," he told Seacrest in the interview that aired Thursday.

Bieber also talked about seeing Michael Jackson as his role model.

"I look up to Michael Jackson as far as being the ultimate entertainer. his music has just so much passion and emotion in it that I feel that I want that passion and emotion to be portrayed in my music," Bieber said.

The 18-year-old pop star also opened up about his private life and said he considers himself a very romantic guy.

"I think I'm a pretty romantic guy, yeah," Bieber said. "The most romantic thing that I've done is the Staples' center thing...movie night, we watched Titanic."

The book's hardcover edition sells for $12.86 and the e-book sells for $8.89 on Amazon.

Bieber is scheduled to perform tonight on America's Got Talent finale at 8 pm EST on NBC.

Watch Bieber's Interview with Ryan Seacrest Below:

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