Why he doesn't love me?

Isabella- I will make you fall for me someday William- dream on! the one I love my full life will only be your sister Isabella- why doesn't you love me? we are married! William- we are married only in name, don't think so much about it. will Isabella make him fall for her? or will she give up and leave him? why doesn't he loves her? what makes him hate her? find out in novel