[x] Quotes from Sai
Even if I force myself to smile. It seems I'm the type of person who ends up being hated.
It's because Sakura loves Sasuke that she doesn't want him to sink any lower. It's because she loves him that she wants to rescue him from the evil path he currently walks. Even if the only way to do it is to kill him with her own two hands, I believe, she's prepared to do it because she loves him.
A smile is the best way to get oneself out of a tight spot, even if it is a fake one. Surprisingly enough, everyone takes it at face value.