Its not confirmed but takL translated one of the many leaked spoilers and this was one among them.
Apparently, Naruto goes and floats in a magical lake where he magically realizes his hidden feelings for Hinata. Then he goes and proposes to Hinata but she doesn't say yes. She leaves with the villain Toneri instead. Naruto gets all jelly and starts sulking like an immature brat.
Then Shikamaru and Sai try to act as advisors for NH but Naruto still remains sad that the angel Hinata rejected him. Then Shikamaru asks Sakura to help them and she goes to talk with Naruto.
In that conversation, Naruto talks about his feelings for Hinata and says- " Whenever I think about Hinata, I get a feeling of tightness in my chest ". Sakura responds- " That's how I feel about Sasuke. If a girl loves someone when she was young, that love never goes away. You never were like this when you liked me. What you feel for Hinata is much stronger. You only liked me because I liked Sasuke ".
Its batsh*t crazy 
Edited by ns.Believe.It, 30 November 2014 - 11:40 AM.