Kai Laramie and Juniper Castillo, being cast in the buzzy biopic, is the opportunity they’ve been waiting for. They are on the verge of breaking out, and maybe even falling in love. Juniper is former child star and Kai is a fragile new face, both hoping for success in an arthouse film about life of Andy Warhol called Andy Warhol Never Gets Old. Soon the movie is blowing up and so are their lives- in exciting but also terrifying ways. Warhol sets the tone here, not just in his prescient insights into selling one’s soul for Insta-frame but in a coolness. Both teens have abusive past but lack emotional drama of a Green classic. Kai complains that in turning his pain into profit, nothing is left for himself, where pressure to commodify ourselves ruins integrity.

John Green, from Indianapolis, who used to be one of the most successful YouTubers with four million subscribers, having launched on the platform in 2007, is the young adult phenomenon the Fault in Our Stars that 2012 novel featuring Hazel, a doomed teenage cancer patient, falling in love. Even though I was no young adult, I agreed, wet-eyed, that it deserved its status as one of the bestselling novels in history.

John and his brother Hank Green founded Complexity, a free educational You Tune channel that continues to run as a non-profit with 70 employees. Their online Good Store, selling socks and coffee under the altruistic model of Paul Newman’s sauces has raised £13.9million for charity. Their charity also raised $50m by efforts of their digital fanbase  for a new maternity hospital in Sierra Leone.

Hollywood Ending by John Green, Penguin £22, 304 pages.