Board Thread:Naruto: The Last Discussion/@comment-24098614-20150126075513/@comment-25632268-20150127202405

Otaku4469 wrote: I didn't know that Hinata was dating him back them because if I remember Naruto when he was younger was despise by the village, and nobody would want nothing to do with him, and we are talking about the Hyuga Clan, and they follow a very rigid and harsh outline especially when it comes to dating outside the clan so I don't think this is very highly, and Hiashi is a stick in the mud about this.

They were dating in the period between their first kiss at the end of the movie and their wedding during credits. A limited copies of special manga book was released with the movie and there is an omake chapter showing this.