Now, the highly anticipated movie adaptation of his latest novel, The Fault in our Stars, starring Shailene Woodley and Ansel Elgort, is rocking the box office as it hurtles toward a whopping $60 million opening weekend, according to early estimates.
Here are five things you need to know about America's hottest author.
1. His roots grow books.
Green set three of his novels in locations where he was raised. The author was born in Indianapolis – TFIOS takes place there – and later lived in Amsterdam, where the movie was filmed. He also grew up in Orlando, the setting for Paper Towns, and attended Indian Springs School in Alabama – the boarding school that inspired Looking for Alaska's Culver Creek.
2. He's easily moved to tears.
"I'm an emotional guy. I cried almost every day on the set," Green tells PEOPLE. "I cried because it was so overwhelming that all of these really talented people are bringing so much passion and so much talent to the story that I've written and giving it a new life. I was overwhelmed with gratitude the whole time."
James Bridges / 20th Century FOX / AP
In 2007, Green and his brother Hank created the YouTube channel VlogBrothers, which now has over 2.1 million subscribers. They later founded Vid Con, which became the largest video convention in the world. Hank also won a 2012 Emmy for original interactive program for The Lizzie Bennet Diaries.
4. There are more movies in his future.
Paper Towns was picked up by Fox 2000 studio and will star TFIOS' Nat Wolff. The screenplay is being written by TFIOS scribes Mike Weber and Scott Neustadter.
5. He asked President Obama to name his second child.
Four months before Green's daughter Alice was born last year, Google+ hosted a "Fire-side Hangout" session to discuss President Obama's most recent State of the Union address. During the chat, Green's wife, Sarah, asked the president if he preferred the name Eleanor or Alice. The president opted to remain neutral in support of whatever name the couple chose.