True, but you conveniently overlook the aspect that when Sakura is around Naruto, she is who she really is, but when she is around Sasuke, part one she is someone she is not (as demonstrated by the presence of the inner and the constant monitoring of that inner for the sake of impressing Sasuke) and in part two, her character regresses. All of her development goes straight out the window and she becomes submissive and unconfident. Not so when she is around Naruto.
Not so much. A sexual partner is a partner for ***. The term sexual partner doesn't extend past that. Naruto does not see Sakura as a simple sexual partner, she is the girl he loves and wants to have a relationship with her. Your flawed logic pertaining the NS revolves around the former as opposed to the latter, which is why it is misguided.