But on this trip is when they discovered Gus' cancer all over his body. This is the point of the story when you start to lose hope. You know that Gus cannot end well. And so they go back to America. This is when Gus starts to loose all strength.
Gus eventually died. This is the part of the book where everything seems to go wrong. But hazel realizes that they both fought hard and that he is in a better place.this is the fault in our stars