Originally posted by: Legendary Nin
Who says Gaara is good? He could be fighting for his desire of blood,I mean look at it.This guy gets the offer of a life time,to consume the blood of an ancient and powerful bloodline,he's probably still fighting for himself,just doing a favor in return.
The implication is that after Gaara's encounter and loss to Naruto, he finally gets a little sense knocked into him. The quote is, I believe...

"Will I... ever love?"

At which point he thanks his teammates as they drag him off the field of battle; an unprecedented activity for him.