If you watch this series, you will come to know the whole story about it. Once you watch you will come to know that there are two girls who play the main character in this series. Therefore these girls have the opportunities for ending up with the hero Naruto. This will be the same unless Kishimoto who is the author of this series throws in few more female characters onto the story. There are two main girls in this series who are known as Haruno Sakura and Hyuuga Hinata.
Sakura has been always been Naruto's crush. This was the same from the beginning of the series. Even though she is the team mate of Naruto, she was not necessarily Naruto's friend at the starting of team Kakashi. Indeed, Sakura displayed much hostility towards Naruto in the starting of the series. However, she will warm up to Naruto as the series progresses and begins to care him as a friend.
Then you will come across Hinata. Hinata is a very shy girl, like all the other academic girls. From the beginning she had a crush on Naruto. Hinata never looked down on Naruto even though she is very smart than Naruto. On the contrary, her crush on Naruto is huge that she will faint whenever she will come close to Naruto.