The 18-year-old singer`s single `Baby` is one of the most popular songs ever on the video sharing website but ambitious Justin wants to be ever more successful than he is now.

He told Rollacoaster magazine: "Each time I break a record I`m always happy. With my YouTube stuff, `Baby` has more views than any video - ever. So my next goal is to reach one billion views on a video."

Justin also revealed reaching the milestone age of 18 has made him even more determined to remain successful and says he has turned reflective on his new album.

He explained: "I am growing up, I am now 18 and my fans are growing up with me.

"I`m getting older and I want that to reflect in my album - it is just more mature and reflecting the age that I am."

Justin is dating 20-year-old Selena Gomez and treated her to a lavish birthday dinner in Beverly Hills on Sunday night (22.07.12) where he made her cry with a romantic and heartfelt speech.
sections: Celebrities