I’d rather live up to my youth than you

To believe in fate was to be led by fate. To not believe in fate was to be dragged by fate. She met him because of a deal. He gave her warmth and hope, gave her/him the whole world,’Because of you, I’m willing to give everything I have, just for your happiness!’ But when that ’her’ appeared, everything changed.。。。Why? "So heaven and hell are just a thought."。。。。。。