Just like Sasuke doesnt loving back Sakura, and Naruto doesnt loving back Hinata. Thing is:
Sakuras feelings for Naruto > Narutos feelings for Hinata
Sakuras feelings for Naruto >>>>(>) Sasukes feelings for Sakura
Each pairing is one sided, but NS is the most mutual one. Anyway, Im not gonna to drag this discussion, I just wanna bet. So?
You kind of making my point.Sasuke hasn't shown he loves Sakura but she still loves him and wants to be with him.Naruto shows he love sakura but sakura hasn't shown the slightest interest in being with him.You see what I'm getting at.Sakura to naruto is like Sasuke to Sakura.Sasuke will never care about Sakura to the point of wanting to be with her and Sakura will never care about naruto to the point of loving him.On the other hand, you are wrong about naruto relationship with Hinata because Naruto actually cares about Hinato well being, her happiness, her strength which he has shown since the beginning of the series.From taking a beating for her before he was an academy students, to wanting to reassure her worth when she fought neji, to going nine tails when he thought she was killed by nagato.
Now lets examine the relationships.
Naruto loves Sakura but Sakura doesn't love him
Naruto likes and cares for Hinata (though he doesn't love her), and Hinata loves Naruto.
Sakura loves Sasuke, but Sasuke doesn't care for Sakura at all.
Out of the three relationship, the one that is the most plausible is naruto and hinato for the simple fact that hinata loves naruto and naruto cares for hinata.Caring for someone can easily lead to love.But loving someone and not being love back isn't how relationship usually develop.That more along the lines of how rapist/stalkers develop.