Chapter 19-Catcher in the Rye

Holden seems to be losing his mind as the story progresses. He becomes very childish while at the Wicker Bar with Luce, his friend from the Whooton School. He starts interrogating Luce about sex, which was a topic that Luce always talked about at Whooton. "You do? Why? No, kidding, they better for sex and all?" Luce even asks Holden if he will ever grow up, " Same old Caulfield. When you going to grow up?"