Stand corrected lol.
And I didn't mean romance wise but brother sister wise or best friend wise.
Honestly I don't know. From the beginning Sakura was very skeptical about Naruto, she didn't really like him, even thought that Naruto wanted her to fail. It took Sasuke being harsh on her after she insulted Naruto on being an orphan, and her realizing that Naruto wasn't such a bad guy after all, despite his childish antics.
Naruto on the other hand has always been very supportive of Sakura, and most of his friends in general. He always supported her, and never once looked down on her, not even when she was powerless.
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On the opposite end, Sarada and Boruto started off as childhood friends, but they didn't really have any negative things to say about each other. Sarada stated that they had something in common, and it had to do with their fathers. As they grew up (talking about the Gaiden now), they both showed that they had a civil friendship. Sarada would vouch for him when he wanted to hide from Naruto during their game, and Boruto had thanked her after she delivered the bento to Naruto, as she said she would.
In the Movie we get a glimpse of them arguing over whether an animal is a Panda bear, or just a regular bear. Still things don't escalate, nor does she hit him. On this end we get a glimpse of how Boruto treats his team mates, thinking that team work is unimportant, and regarding team mates as something trivial for missions such as this. Even when Sarada complains that she wants join the Chunin Exams to become Hokage, Bolt states that he wants nothing to do the Exams, and he doesn't care about the Hokage in general (which is something she wants to do, but he still her it's the wrong choice). Sarada doesn't give up and later he gives in (also gotta give this to Katasuke as well).
During the Exams, despite telling Sarada he doesn't care, when he was about to lose in the Exams against the three brothers, he thought of father, Sarada, and Mitsuki. Which makes him turn on the device so that his team wouldn't lose, and more importantly, that Sarada's dream wouldn't end here.
I'll stop right here though.
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If you compare and contrast both friendships ... Naruto is more open, Boruto is more closed off. It took a while for Sakura to understand Naruto, and to accept him for who he was, while Sarada easily understands Boruto as a person, and roots for him in her own way (among her other friends and team mates).
It was really cool to see the contrast in the Movie. For example you would have scenes where the team would pass, and Boruto would look glum and unhappy, and Sarada would get in his face and tell him to smile while extending her hand for a high five. Or another scene where both Mitsuki and Sarada were shocked to see that Boruto could smile that wide when he saw his sister.
Interesting aspects between children and their parents, sadly it was done in a time where originality and good concepts might not last that long. I'll be really disappointed if most of their interactions turn to shit.