"Don't ever tell anybody anything. If you do, you start missing everybody." (Chapter 25, Page 214 )
Ever since Allie's death, Holden has suffered emotionally. He lost a very important part of his life, which was being open to the ones he cares for. Since Allie is gone, it's hard for Holden to open up to anyone else because of the thought of loss. He fears that if he opens up to anyone else, they will eventually go away and he will feel the pain of loss and loneliness once again.
"What I really felt like, though, was committing suicide. I felt like jumping out the window. I probably would've done it, too, if I'd been sure somebody'd cover me up as soon as I landed. I didn't want a bunch of stupid rubbernecks looking at me when I was all gory." (Chapter 14, Page 104)
After Holden is hit by the elevator boy, Maurice, he starts to have suicidal thoughts. He wants to just end it, but he's also very concerned with what people would think about him if he was found dead on the street. Holden has suicidal thoughts but holds back for the sake of himself and other people.
"If you want to know the truth, I'm a virgin. I really am. I've had quite a few opportunities to lose my virginity and all, but I've never got around to it yet." (Chapter 13, Page 92)
As said earlier, Holden is sexually innocent but emotionally not innocent. He has had plenty of opportunities to have sex but eventually when the time comes, he gets very scared. For example, when Sunny, the prostitute comes into Holden's hotel room, he chickens out just before they are about to have sex. This shows that he is still innocent and inexperienced.
"The kid was swell. He was walking in the street, instead of on the sidewalk, but right next to the curb. He was making out like he was walking a very straight line, the way kids do, and the whole time he kept singing and humming." (Chapter 16, Page 115)
Throughout the book, Holden almost always appears to be very depressed and lonesome. This quote shows one of the few times where he is not depressed in the novel. He notices the innocence in the young boy humming a tune and it makes him happy. Holden loves children because they are innocent and unaware about the bad things that can happen.