Sakura knows Hinata really loves Naruto as She was healing Hinata from Pains wound, She was thinking about it. After Hinata recover She told Hinata not to do that again.
lol, way to take the non subtle sexist approach XDI wish they would kill off Sasuke and Sakura already. 2 of the worst characters in the whole story.
Anyway Naruto will see straight through her. We all know women are liars.