The true beauty about NS relationship is their development. In the beginning I saw Sakura having a school girl crush on Sasuke. Seeing her praise Sasuke all the time and putting him in favor over Naruto all the time was really one of the humors that I noticed on this series. But once again, I believe it's only infatuation . The reason I say this is one, Sakura was still a child back then and does not know yet the true principle of love believing that love is like a "fairy tale". Second, Sakura does not really know who Sasuke really is back then, She does not know what he likes/ dislikes, past experiences and hardships he went through. Even though Sasuke was obviously devastated by the tragedy of their clan, Sakura is not aware of it and even talked to him about "Naruto not having a parent" (which obviously "Not having a parent" is something Sasuke is Sensitive to) and ofcourse Sakura paid the price for it by being called "Annoying". These facts made me think that the reason behind why she "liked" Sasuke is because of his physical appearance and skills which can never be love.
In Zabusa and Haku Arc during their first fight with Zabusa, Sakura was seen blushing still believing that it was Naruto's plan that freed Kakashi. She felt the same feeling of admiration for Naruto the same with what she had for Sasuke but this feeling unlike how she felt for Sasuke was just "unnoticed" but not "disregarded". Most of what Naruto does that impresses her during the part 1 series in my opinion are just unnoticed, like Naruto defeating Kiba and Neji, Him protecting her from Gaara during the war, Naruto's resolve of bringing Sasuke back even after failing, etc. (You can look at one of the posts here by Slextrem at http://www.narusaku....showtopic=12836 . There's too many to mention >.<) The point being made is all those feelings triggered her reactions on some events like dropping out of the written chuunin exams by Ibiki "not to crush naruto's dream", Sakura lying about having her hair cut (to free him from worries of what happened while he was unconscious), lying about who hurt her arm in part 2 where Naruto first showed the 4 tail transformation. Which can only be explained because she loves him but this feelings were just unnoticed.
Those feelings for Naruto only shows without her realizing it, and there is one who recognized this (Yamato) during the battle on the bridge with Orochimaru. While her relationship with Sasuke slowly turns from open infatuation (I only had this term referenced to how Naruto differs Jiraya from Ebisu as Jiraya openly shows his perverse and Ebisu hides it earned him being the "Close Pervert", Sorry I don't know a better term to use as Sakura openly admits she likes Sasuke in Part 1) to just friendship or maybe just less and with Naruto from being disliked to unnoticed love.
I can't wait to see How things will unfold in the coming days as I'm feeling the series is near it's end it's only a matter of how will Master Kishi unravel Sakura's feelings. I know some people keep bashing on other forums and try to twist how we view things but hold on to what you believe. And this is what I believe in, still it's just my opinion so feel free to share yours too :) It would be awesome to see things in more point of views!