Now, to justin bieber. The 18-year-old superstar opening up in his second memoir out today. Taking on the paparazzi, opening up about his love life and revealing who his perfect girl is. Take a look.... See More
Now, to justin bieber. The 18-year-old superstar opening up in his second memoir out today. Taking on the paparazzi, opening up about his love life and revealing who his perfect girl is. Take a look. ♪ Reporter: Most teens his age are sweating school essays. But pop superstar justin bieber has finished writing his second memoir. The book just getting started is due out today. The teen sensation filmed a message to his fans ahead of its release. My life has changed so much within the past couple of years. I wrote it so you can see all the behind the scenes in my world. Reporter: Exclusive excerpts and photos from the book. But don't expect the 18-year-old to dish on everything. In a nod to his relationship th singing star selena gomez, bieber writes, there are some things I am trying to keep private because I'm young and figuring it out. I'm learning about trust and the joys and struggles of it. I like being with someone who is smart and who I can have an actual conversation with. Bieber takes aim at over zealous paparazzi, writing, it's not okay when they come at me. There's a misconception that i hate the paparazzi. I don't. I simply don't like the aggressive paparazzi. The pop star has had several high-profile run-ins with photographers this past july. A scared bieber even called police to report that he was being chased. 911 emergency. What are you reporting? Hello. I have, like, five cars following me. Reporter: And in may, bieber confronted a photographer outside a movie theater. But it's not just paparazzi. While waiting for gomez at a toronto airport, bieber had words for overovereager fans. I am a human being. There's is a price to pay. And he talks about that in some depth. And the price he pays is giving up a lot of freedom.
This transcript has been automatically generated and may not be 100% accurate.