Imagine that you love chocolate (maybe its real). And imagine that you're studying, playing with super delicious chocolate. But, you mustn't eat it. How do you feel?
If that me, I'll eat that chocolate! I don't care what will happen.
Yep, that was what edward felt when he met bella. He's a vampire, who eats humans, and met someone who smells very delicious.
He couldn't eat her because he loves her (I think). Same like you with delicious chocolate.
