A touching love story, just brimming with existential musings: John Green uses the vehicle of cancer and young love to touch on some deeper ideas on life and death, the meaning of love, "why are we here?", the beauty of human connection, the suckiness of living with and dying from cancer, and the perfectly imperfectness of us all. 
 No, I didn't cry. (LOL). But I can see how this was a tear-jerker for a lot of people. 
 Now I shall proceed to buy and read all his other novels.