Ok, well here's what I think:
To begin with, let's start with Naruto and Sai conversation. My interpretation is that there's no doubt that Naruto loves Sakura, even to this day. Sai caught him and Naruto got a shocked/nervous reaction. Now the serious question is: did he confess it to her. He did not. The reason why I said that he will confess his love to her in the end, because as of now, he feels like he's not worthy to be with her. As I mentioned before, he is not immature about love. He is serious as he can get. Sure, he can improve it, which I think Kushina helped a lot. Remember, Naruto is not good at understanding a woman's heart. Perhaps this is the way for him to be prepared for Sakura's change of heart (from Sasuke to Naruto). Kushina reassured Naruto that a woman can make a mistake on man, like not believing Minato could become a Hokage, so in other word, Sakura is the same. It's not about looking cool, it's about the heart of a man to a woman, which Minato shows to her by rescuing her and compliment the one thing she hated. That is true love.
Someone here say that Naruto don't understand true love. That may be true. For the record, that doesn't mean he will change his view and go to Hinata. Far from it. As I said everytime, Naruto is not about changing his dreams/goals/feelings. It's about maturing/improving it. Like for Sasuke, he understands the hatred, vengeance, etc. now, so he can actually have a back up argument, instead of feeling like he knows everything off the bat. Granted, no one will know how one truly feels 100%, but that doesn't mean that a person can't help another. So back to this, yes, Naruto is improving his idea of love and it won't put into action until further notice by Kishi. I mean it is coincidence about Obito/Rin and the fact that Obito declared that because of her death, his life of the old days vanished.
As for Sakura, yes, I do believe she doesn't know what love truly is either. The lover nin put her on the spot because the importance of true love is happiness of a couple. When he said that the guy must be a great guy, she basically thought that he isn't, and what's worse is that she's not happy at all. Her character is about understanding the reality of life. There could be one man that is truly worth it yet she can be blindsided. The point is learning the true way of living. Romance has not been touched on yet, but it certainly looks like we are getting there soon. Sure, we are hinted in the manga, but that's Kishi way of saying, "But that's another story waiting to be told." Their friendships are at the peak now. The next level is romance and Kishi seems like he's getting ready to play his cards on the mat. Sakura has already shown that she put Naruto's safety first than anything else. It's funny that she was losing all hope for Team 7 reunion, thanks to Sasuke, but Naruto is the one to bring it back and made her smile. Oh yeah, I don't think Naruto hasn't noticed that she is coming closer to him. The only time he probably assume is the feeding scene, but we know how that ended. The one that shocked him is the hugging scene. Never he thought he was going to get a hug by the girl he loves. He could be oblivious to Sakura's approaching to him at certain times, but who knows. It is possible though. After all, he said that she loves Sasuke. Perhaps that's why he needed to understand a woman's heart by someone, which Kushina sheds some light for him.
Interesting to note. Yamato's statement seems to connect well with Itachi's statement. Yamato was about telling her that her feelings for Naruto is the true support for Naruto. I don't think she got the idea yet. It was proven that it is true about what Yamato said by Naruto telling her that he feels so happy that they're getting close to Sasuke together. He feels great with her being on his side and that's where all the support comes in. Now, the Itachi's statement was about letting Naruto know that Hokage doesn't rely too much on him/herself, it's about that a very loved one and the rest of the village that makes the Hokage strong. Minato became a strong Hokage, thanks to Kushina and the village. Even Minato pointed out that she helped him to become one. Naruto's strong support is indeed Sakura since he feels so happy and the fact that as long as her feelings for Naruto is strong, he will be a strong Hokage. It make sense and even Sakura's determination mentioned both of them.
Before I close this, I should bring up about SasuKarin. Look, I am not a fan of this pairing, but I do see a potential to be honest. Okay, before you say, "Oh you want to favor it so it can kill SasuSaku, like how NaruHina doing it with SasuSaku to kill NaruSaku," first of all, I don't think that way at all. It's like I said long time ago, Sasuke can end alone, which it has a good chance, or ends up with Karin. The only reason why I'm 50/50 is because the fact is that we are about to see the reunion of Team Taka and Karin is left behind for now. Why? For suspense? Why make her as a Uzumaki, which leads back to why for the sake of suspense? I will see what is my opinion on this pairing as soon as I see her back with Sasuke and witness the first thing that will happen. Also, it's convenient that Sasuke is on the move to find the truth of everything and Karin is an Uzumaki. We got to remember, the title Uzumaki is not something you can throw in. That's a huge name. Not like the anime studio can make a filler character who's also an Uzumaki. That's like making an filler Uchiha character. So, why Karin? What will that accomplish? We have to wait and see. The other half is that Sasuke is just not interest in women at all. But I will say this, if Sasuke ends up as a wanderer alongside with Team Taka, I could see an epilogue where you see Sasuke has a kid and when Naruto asked him about the mother, which turns out to be Karin, then it can be a shock factor in a comedy way. It's one of those moment where it just happens overtime. It reminds me of Shaman King manga ending. I must admit though, this pairing does have a great reward in the end. It does make a great way to end the hatred of Uchiha cycle. But who knows for now. I won't talk much further on this unless you want me to or when the manga comes back to them.
So, I hope you enjoy reading this. Sorry for this post to be very long, but it's something I like to do.