The fault in our stars sequel

Hi, I am a fan of John green and I'm just borrowing his characters in the story two teens are in love with each other and the only thing standing in their way that they have in common is them having cancer they are scared to love because they are scared of losing each other but they try anyway and their love is stronger even after augustus dies because the infinity is bigger filled with the memories of them being together and nothing or no one can replace it. When you find your true love in life no one can replace that void of emptyness their connection is your only connection.
After augustus dies Hazel faces the world by herself she doesn't want to date anyone else the only person whom she talks to is Issac. She finds out that she has a month to live when she goes to the hospital for breathing lapses because she is 18 she begs the doctors not to tell her parents because she doesn't want them to worry she tells Issac who says he is glad he can't seebecause h the world without augustus