Despite the fact that Yamato is a bit out of the loop when it comes to Naruto and Sakura's history, anyone can tell that their relationship and the way Sakura feels for Naruto has changed. In part 1 she essentially treated him like crap, following after Sasuke like a lost puppy. But the girl got her heart broke.
Now in Shippuden, it's clearly obvious that she feels much differently about both of her past teammates. I can't really say whether Sakura has any hidden feelings for Sasuke anymore, but she's definately not so...fangirlish... about it... which might just stem from the point that she grew up, but then again... (Karin >_>)
Anybody with eyes can tell that Sakura cares alot more about Naruto than she did. What with the whole finding about his Kyuubi form, healing all of his wounds, and lying to him by telling him that Orochimaru was the one who hurt her. I mean, would she have honestly done that in part 1? maybe.... but i don't think so, atleast not before those monsterous filler arcs.
And let's remember when they were first reunited, there were definately sparks. What about Hinata's reunion with Naruto? The poor girl passed out as soon as she saw him. I mean, for real?
Also, is it just me, or does Hinata BARELY appear in the manga at all. I mean, even the fillers are giving her the cold shoulder. I haven't even SEEN her in the recent episodes where they've been showing other characters. I mean geez.
Ok, done making a point, ready for the onslaught of angry NaruHina fans.