Boruto's subtle but mature respectlove for Sarada is all we need.
You see, Sarada and Boruto's relationship is by far one of the best things of the next generation. I never saw them as "rivals" -- Maybe not the same way we see rivals who fight among each other. Boruto and Sarada are more like close friends who bicker with each other back and forth, but still remain to have bond that remains unique from the past gen.
Sarada: Wants to help Boruto, in fact she roots for him quite a lot. Though unlike past female characters, she doesn't allow herself to be caught up in his problems and still remains to follow true with herself (in example of not allowing Boruto to ruin her dream by becoming Hokage because he didn't want to join the Chunin Exams, but still caring enough to support him and his father's situation by telling him Naruto will watch him, along with Katasuke stating the same thing but wanting something else). In Chapter 700, Sarada wanted to follow Boruto due to the prank he was going to do, but in the Movie we see Sarada following Boruto while he trained so she could root for him in her own way. You could see a frowned look on Sarada's face when Boruto gave up at times, but when he came up and started trying harder her face lit up. When Boruto thought he failed to impress Sasuke with his Rasengan, Sarada came from the bushes and started to tell Sasuke that she didn't know Boruto well enough, that it was a miracle he kept training for as long as he did.
Overall her friendship with Boruto is rather refreshing. You have a female character willingly to go out of her way for another person, but still not lose her meaning as a person in the Manga.
Boruto: His feelings for Sarada are more hidden, but still rather obvious at the same time.
While Boruto does not outright want to help her straight away, he begins to root for her. We see early on in the Gaiden that Boruto has a positive relationship with Sarada, and his other friends. In the beginning when Sarada told Boruto she wanted to become Hokage, he scoffed at her dream and saying that Hokage's were weak under his breath. In the Movie, we later see Boruto and Sarada arguing over the same topic. Sarada wants to become a Chunin to further advance herself to the Hokage spot, and Boruto connects 'upgrading as shinobi' to him 'becoming hokage' (Which shows the mentality of how the world looks at him, and it's seen through Mitsuki. They all expect him to become Hokage, which is why for the most part he has no interest in becoming a Chunin.) Eventually, Sarada figures out how to open him up, and he later accepts and joins the Exams.
In the second part of the Exams, Boruto is up against three Genin brothers who can also make the shadow clones (up to 3 each). When Boruto gets overpowered and outmatched, he closes his eyes in anger. He then hears Sarada's voice, and it says she wants to become Hokage, and then it shows a picture of Chunin Exams. So immediately Boruto begins to contemplate on not only his internal struggles with his father, which is why he had the device in the first place (and why he was in this situation) is because he wanted Naruto to look is his direction. But at the same time he thinks about Sarada in this situation and her dream of being Hokage which he only scoffed at, and he starts to use the device. So in that sense, he not only is fighting for himself, but he is fighting for her (whether he admits it or not).
His connection with her is never outright stated by him, he doesn't go out of his way for her like she does for him, but he does enough behind the scenes and in important parts of the story which make you feel for their relationship. When Sarada fell into her knees because of Momoshiki's power, Boruto immediately made a shadow clone to surround her on both sides so that she would feel safe. It's things like this that show you how well these two work together, compared to the past generation's relationship (let's say Naruto and Sakura).
Towards the end of the Movie, Boruto told Sarada that not only does he support her dream of becoming Hokage, he also wants to protect her and retain a relationship that Sasuke and Naruto share.
Minato and Kushina started off as rivals for the Hokage spot, and look what happened.
Shikamaru and Temari too doesn't need an explanation.
But at least there's hope that these two characters won't bring each other down like other ships in the Manga who do more harm than good.
