The idea of forbidden love is found between Nicholas and Etta. They come from families who are at war, as well as from different time periods. In Nicholas' time a man and a woman of different races was also looked down on.
“ One day whether you are 28 or 65 … you will stumble upon someone who will start a fire in you that cannot die. However, the saddest, most awful truth you will ever come to find - - is they not always with whom we spend our lives.