Think of the broad scheme of things.
And if NaruSaku doesn't happen by some sort of freak accident...in about six months tops you'll be over it. No biggie. Let's be more fearful of being wrong on things that are more important, not over mangas or movies.
See, that's how we should all think about.
My faith is strong because, no matter how strange it sounds, I trust my gut and I trust Kishi's manga. That's my I'mm not afraid of the movie either.
Also, my friend who studies comparative literature just told me her theory that: (and i quote)
"on-panel reiterations of Sakura’s love for Sasuke does not negate the possibility of NS endgame. This is due to several reasons.
First, Sasuke is not guaranteed to reciprocate Sakura’s feelings. Indeed, Sasuke has admitted Sakura as important; however he has never clarified the nature of this importance - not least in a romantic sense. Second, while it is true that Sakura has matured because of Sasuke, it is equally true that the consequences of her feelings have been negatively painted. Specifically, negative themes of betrayal, irrationality and impulsivity have been strongly affiliated with her love (see Kage Summit), bringing its fruitfulness to question. Third, Naruto’s feelings for Sakura have been recently foregrounded (Naruto telling Minato that his love life has taken an unexpected turn). This parallels with the previous foregrounding of Sakura’s love -rather, doubt of its reciprocation- in that the romantic futures of both characters are the same: uncertain. This, by extension, adds weight to Naruto’s love for Sakura - an aspect often dismissed by the opposition. With all of these factors in mind therefore, an NS route rather than SS is plausible. By route, I do not mean Sakura instantaneously falling in love with Naruto; rather, her slowly overcoming the negativity in her feelings for Sasuke and accepting Naruto’s feelings.
Such a route is thematically consistent with the story."
We are not are essentially worried about NS not matching of what is being told in the manga, nor how it matches with other common literature devices. It is just that the advertisement is pushing the NH angle soo hard, we are unsure if it's a troll or they being serious... While all proof points to NS, The Last promos are sort of implying otherwise.