As hot it is to see Hinata as a cock hungry slut. The thought of her ever cheat on Naruto is absurd. Also I can’t imagine Naruto will ever be bad at sex, considering how much of a stamina monster he is even without Kurama’s help, he have his clones, and he might have of learn some sex techniques from Jiraiya’s books.
As for Sasuke, I find it hard for him to ever make a move on a woman, much less ever be sexually attracted to one regardless of whether she haves a sexy body. I always thought that he was asexual.
I know this is fiction, but I can’t imagine a relationship between Hinata and Sasuke. And for these two to betray Naruto (the person who has done so much for them.) is also unimaginable.