Can somebody tell me in breaking dawn why did edward bite the pillow i never get it why he did that?

lol because he had to bite the pillow so he could control himself and not hurt bella in the process of their love makingg....

if he didnt bite the pillow god only knows what he would have done!

Edward was making love to Bella, he bit the pillow instead of Bella.

if he didnt he prob would of bitten her.