I didn't even talk about the part where Christian Grey starts playing the piano and singing and even the characters inside the story are surprised and confused.

Click the fanfic that deserves to be made into a movie more than Fifty Shades of Grey:
A teenage girl's Twilight fanfiction where she casts herself as Bella and her reallife crush as the romantic lead   / jennynicholson  
Reylo coffee shop AU, released into theaters as Episode IX   / jennyenicholson  
A brony's fanfic where he goes to Equestria and he meets all the ponies and has to protect them because he's very strong   / spider_jewel  
Lucius Malfoy/Arthur Weasley forbidden romance   / jennynicholsonvids  
Homestuck vore   / spiderjewel