This can be argued til we're blue in the face. And I'm sure many have already. But if you visit the fanclub over at NF you'll find lots essays and manifestos that will help you find "proof".

LJ ship_manifesto has one for sasusaku too by erendhyl. link

For me, you only need "proof" when annoying haters need to make themselves feel better by reassuring themselves their own fictional ship is better or "will happen".

Personally, I don't think Sasuke's feelings of love have been clearly confirmed. But I also believe, with fictional stories, you don't need hard evidence, just an imagination and an open mind for whatever floats your boat (i.e SasuNaru).

Hell, my otp is Dramione. They aren't even canon, but with fanon, I truly believe they could have been a better match tenfold compared to a ship like Ron/Hermione.

Just enjoy sasusaku for what it is on the internets. :D

dont know its seems like kishi-sama confusing us.sumtime he look care sumtime didnt he tried to kill her but not even leave a scratch on her

if you go to the fanclubs they have the proof the two will together
if you go to the antis they have the proof the two wont together
its depend to where u wanna go

go to this link.
link
sasusaku is very beautifully interpretated and i think a sasusaku fan must read this.

I really don't care if SasuSaku happens. I just ship them for fun. But I like it way better than NaruSaku.
Recently I found myself shipping SasuNaru, too, but not as a yaoi couple, if you know what I mean.

here's your proof. ^^
-During the bell test, when Sakura fainted from seeing his head above ground, and the rest below, Sasuke waited for her to wake up, even though he probably knows he's wasting time.

-When they were escorting Tazuna to the Wave Country, Sasuke rushed in front of Sakura to protect her and Tazuna, even though Kakashi would have come (of course, he didn't know that but still)

-When Sasuke and Naruto were fighting Haku, Zabuza went to attack Tazuna but Kakashi protected him and Sakura screamed. When she did, you could hear worry in Sasuke's voice when they heard her.

-During the Chuunin Exams, The Forest of Death, when Sasuke and Sakura first found, Orochimaru, disguised as a Grass nin, when he stabbed his leg to get rid of the whole frozen in fear thing, when he went to pick up Sakura, he could have done it many ways, but he chose to pick her up bridal style.

-Again during the Chunnin Exams, The Forest of Death, when Sasuke and Naruto were fighting Orochimaru, disguised as a grass nin, after Orochimaru gave Naruto the five-pronged seal. When Sakura called him a coward, he reacted. He didn't react when Naruto called him a coward.

-After Orochimaru gave Sasuke the Cursed Seal, Sakura went to help him. I'm not sure if this is just because he was in a lot of pain, but instead of dealing with the pain by himself, like I thought he would, he actually let Sakura help him and the animators made him faint onto her.

-Also during the Chuunin Exams, The Forest of Death, when Sasuke wakes up, the first thing he does is ask Sakura who hurt her. Even the the influence of the Curse Seal couldn't change the bond he has with her.

-Another in The Forest of Death, when Sakura hugged him, the Curse Seal receeded. There's gotta be something behind that.

-During the Perliminary Rounds of the Chuunin Exams, the first thing Sasuke thought of when he was trying to make his curse mark receed was the image of Sakura crying, begging him to stop.

-After Garra semi-changed into his Shukaku form, and after he pinned Sakura to the tree with his sand hand, Sasuke told Naruto that he had better save Sakura no matter what, then run away.

-Also during this time, Sasuke also said that he wouldn't allow another important friend to die in front of him, refering to Sakura.

-Again during this time, when Sasuke went to catch Sakura after the sand released her, there were many ways of catching her, but he had to catch her bridal style. I know that's the way she fell, but then, who made her fall that way. The people who make Naruto. I say, they're hinting something by making Sakura fall in that manner.

-Once again, after Sasuke caught Sakura and went to lay her down on a branch, if you look closly, you will noticed his hand lingers under her head for a split second.

-Do I have to say it, when Sasuke told Pakkun to take care of Sakura, you could hear worry in his voice. His eyes also softened a bit.

-After the Hokage's funeral, in the flashback when Sakura asked Sasuke if he save her, he said that Naruto saved her. You can tell that he had regret and sadness in his voice. Like he wanted to save her.
-When they were escorting Idate through the race, while on the boat when the Rain nin were attacking, Sakura's arm was hit by a kunai. Even though it was only a small cut, when she cried out in pain, Sasuke showed a hint of worry on his face.

-When Ino hugged in during the Chuunin Exams, Sasuke was very mad and pissed off. But when Sakura hugged him in the hospital, he didn't have any hatred in his eyes and he let her.

-During Naruto and Sasuke's fight on the hospital roof, when Sakura ran in the way to try and stop them, Sasuke wanted to pull back. It means he cares for her well being in some way; or else, he would have just ran her through.

-This one I thought was implied. Who confronted Sasuke the night he left? Sakura. The people that make Naruto might be hinting something.

-Again, when Sasuke was leaving, he put up with all of Sakura's talking instead of ignoring her like he normally does. He even gave her a speech. A short one, but still.

-Also when Sasuke was leaving, before he knocked her out, he said "Thank you." This shows that he does care about her in some way, I think.

-The night Sasuke was leaving, just before he said, "Sakura...Thank you" you can see, if you look closely, that he's biting his lower lip before he talks and then knocks her out.

-In the english dub, you can hear how sincere Sasuke's voice is.

-Also in the english dub, Sasuke, instead of saying, "Thank you" like in the Japanese, he says "Thank you for everything." I know they want to get the lip motions right but come on, how can that NOT point to something.

-When Sasuke knocked her out, he could have left her on the ground where she lay, but he chose to lay her on the bench.

-After Sasuke knocked Sakura out I could tell that he caught her. The thud when the screen was blank sounds like Sakura fell to the ground but it's actually Sasuke catching her. I know this because of the way Sakura started to fall. That ground was stone and if Sasuke didn't catch her, she would have hit her head severly. It that happened, she wouldn't have been able to wake up the next morning when the ANBU people woke her up.

-Sasuke knows that Sakura is weaker than Naruto, yet he doesn't call her 'weak' or 'idiot'. Just 'annoying'.

All these things are from the Anime