The time has finally arrived -- "The Fault in Our Stars" is out in theaters now. But super fans of the book may notice some pivotal differences between the novel and the screen version of the beloved story. Let's face it: Not every moment from the 25-chapter book can make it into the 125-minute movie.
SPOILER ALERT! Here are 12 key differences between "The Fault in Our Stars" book and film:
1. In the book, Augustus Waters' parents do not let him take Hazel Grace Lancaster downstairs unsupervised to watch "V for Vendetta." Instead, they let Gus show her the basement and then watch the Natalie Portman film in the living room. In the movie, Gus and Hazel go straight downstairs without any parental guidance.
2. John Green writes that Hazel goes to visit Isaac at the hospital following his eye surgery. In the movie, she doesn't. (And we're sad because NAT WOLFF!)
3. In the young adult novel, Hazel has a friend named Kaitlyn, who is up to speed on her budding romance with Gus, as well as the latest fashions. In the movie, Kaitlyn doesn't exist.
4. Augustus' former girlfriend Caroline Mathers, who died of brain cancer a few years earlier, weighs heavily on Hazel's mind in the book. In the movie, there's no mention of Caroline or the effect her death had on Gus. 
5. Although it exists in the movie, Hazel doesn't put her "Desperately Lonely Swing Set” up for sale, like she does in the book. #AllTheTears
6. The movie left out an important scene in which Hazel and Mrs. Lancaster hear Gus crying and yelling at his mom before they leave on their trip to Amsterdam. In the book, that conversation foreshadows the return of Gus' cancer. 
7. In the film, Gus tells Hazel he loves her while they're at dinner at Oranjee in Amsterdam. Originally, Gus says, “I’m in love with you, and I know that love is just a shout into the void etc., etc.," on the plane ride to Amsterdam. Precious.
8. Speaking of Oranjee, in the book, Gus and Hazel enjoy a picturesque dinner outside, overlooking the elm trees on the canal. In Josh Boone's film version, Gus and Hazel eat inside the restaurant, although the meal still includes champagne and dragon carrot risotto. "We decided to build the Oranjee scene as an interior because when I went to scout Amsterdam for exterior locations, we realized that it would be freezing and dark and likely raining in October, which doesn’t bode well for a romantic dinner. We therefore built the interior in Pittsburgh," production designer Molly Hughes tells HuffPost Entertainment. "I hope that the fact that Gus and Hazel were surrounded by fantastical trees and candles and lights helped create an equally romantic setting!"
9. Gus’ sort of obnoxious sisters, their "banker husbands" and rambunctious sons don't get much (if any) screen time in the movie, although in the book, Hazel mentions them quite frequently as Gus undergoes cancer treatments. 
10. In the book, Hazel finds Gus mumbling in his sleep after he, in her words, "pissed the bed." It's a vulnerable moment when she realizes Gus' cancer is truly taking its toll. This scene is not in the film, but the one in which she finds him in another unfortunate state at the gas station is. 
11. For the movie, Boone decided to leave out Hazel's disdain for all the Facebook comments people wrote following Gus' death. In the book, Hazel is infuriated by all the clichéd sentiments and rashly posts something critical of another commenter, assuming Gus would have despised the sympathy notes. 
12. In the book, Hazel searches everywhere for that "letter" Gus wrote for her. She looks at his parents' house and on his computer, before Gus' father tells her there are some torn-out pages of his notebook missing. After having no luck finding them, she decides to email Peter Van Houten's assistant, Lidewij, to see if Gus sent the pages to their "favorite" author. As it turns out, Gus did send them to Van Houten and Lidewij emails the attachments to Hazel to read. In the movie, Hazel finds the pages in her car after she's bombarded by Van Houten at Gus' funeral. 
If that doesn't get you psyched to see the movie version of "The Fault in Our Stars," we don't know what will! Enjoy, and pack plenty of tissues. Okay? Okay.
Read the rest of HuffPost's "The Fault in Our Stars" coverage:
• What It's Like To Watch 'The Fault In Our Stars' In A Room Full Of Teenagers
• 'The Fault In Our Stars' Soundtrack Might Be This Generation's 'Breakfast Club'
• John Green Cried Every Day While On The Set Of 'The Fault In Our Stars'
• Shailene Woodley And Ansel Elgort Discuss Playing Siblings And Lovers
• 'The Fault In Our Stars' Explainer: Why Everyone You Know Is Freaking Out
• Everyone Is Crying At 'The Fault In Our Stars,' In Case You Didn't Already Know
• An Introductory Guide To Ansel Elgort, Soon-To-Be 'Fault In Our Stars' Mega-Star
• All The Differences Between 'The Fault In Our Stars' Book & Movie
• 'The Fault In Our Stars' Merchandise: Etsy Accessories Inspired By John Green's Novel
• Nat Wolff Explains Why He Was Cast In 'The Fault In Our Stars'
Before You Go
