Disclaimer: I don't own Naruto.
His Side of the Story
Sakura understood him more than anyone else realised. She knew that when he walked away, he was doing it because he was scared of staying and finding out what would happen if he let it. When he scolded her for being weak, he was scolding himself for not being strong enough to protect her. Every time she was pushed away, she knew it was in the hopes that she wouldn't give up. That she would keep trying, to keep him grounded. Sasuke needed someone to love him, but he was scared to accept it.
"You'll never be rid of me."