In the Book
In the Movie
Sal says he first met Dean not long after he and his wife split up.
He says it isn't long after his father died.
Dean had been in a reform school in New Mexico.
It was in Colorado.
When Sal goes to meet Dean they also find Mary Lou jumping on the couch.
Dean comes to the door naked as he is having sex with Mary Lou when they arrive. Mary Lou is naked in bed.
Mary Lou was a pretty blond with immense ringlets.
Kristen Stewart's hair is light brown and is not curly.
Sal says that he was getting over a serious illness when he first met Dean.
He never mentions being sick.