It's rude to spoil twists in movies for people.
Jake tells Lauren that he's about to go see a movie and asks her if she has seen it.
Lauren wants to answer Jake's question.
Lauren tells Jake that she has seen the movie and that she recommends it but that she won't tell him anything until after he sees it.
Lauren tells Jake that she has seen it, indeed and that the ending is crazy because the main character dies.
Jake is thankful that Lauren is not revealing anything and that she's encouraging him to see it.
Jake is angry that Lauren has ruined the movie for him and essentially ruined his night in the process.