Disclaimer: I don't own Naruto.
Impulsive
Sakura had a daring streak. For all her intelligence, she didn't always stop to analyse the situation, instead leaping in to help where she thought she was needed the most. This was a trait that often got her in trouble with her teammates, who for some reason still thought she needed protecting. She proved them wrong time and time again, but still they fought. Sasuke, in particular, was scolding of her self-sacrificing nature, which always made her heart leap at his obvious care. She gave up on analysis off of the battlefield and spilled her secret.
"I still love you."