The story was very well written and realistic, but I just couldn't believe in the main characters. The reason for that, I believe, is partially due to the heavy subject matter of the story. There is quite a bit of stress and angst that goes into a relationship such as the type the two main characters had. Given that, I would have expected that the author build a very strong relationship between the two to explain why the characters were willing to go through what they did. I didn't see that, and therefore couldn't believe in the romance between the two in the end.