Lauren Oliver said this quote

It's the rule of the wilds. You must be bigger, and stronger, and tougher. A coldness radiates through me, a solid wall that is growing, piece by piece, in my chest. He doesn't love me.He never loved me.It was all a lie.The old Lena is dead. I say, and then push past him. Each step is more difficult than the last; the heaviness fills me and turns my limbs to stone.You must hurt or be hurt.