Because the title of the novel indicates its theme of true love, but the ellipsis following the word "Forever" suggests there may be an ambiguous meaning, the most significant plot development occurs when it becomes clear the couple may not actually stay together. Katherine and Michael are young, and although very much in love, this is the first serious relationship for both of them. When Katherine begins to realize she may be attracted to someone else, Michael accuses her of forgetting their promise to stay together. She replies, "I didn't forget, not about you and not about forever." But she decides they should take a break and possibly see other people. Michael is infuriated and refuses to discuss the matter.