holdens attitude to and relationships with girls such as Sally ,Jane and Phoebe and how this contributes to his crisis

At his core, Holden is a deep, sensitive soul, at bottom unable to sublimate his feelings into numbness. He envies someone like Stradlater, who can simply pick up girls whenever he likes, and who treats sex as a casual pleasure. To Holden, however, sex is deeply discomforting. He cannot have it with girls he likes, and he cannot manage to numb himself enough to treat girls casually. Numbing himself to love, it seems, is Holden's greatest challenge. He feels too deeply about the world, about people, to truly shut down. When he finally does fall in love with Jane Gallagher, he soon discovers that Stradlater has a date with her, which confirms his suspicion that everything he loves eventually deteriorates. He leaves Pencey with some hope of inventing a new identity, but he cannot break out of his being. Even in the presence of a prostitute, he cannot think of having sex, only of having a conversation in the hope of feeling some glimmer of human affection with her. All Holden wants to do is talk, but he cannot find someone who will listen.