Anne and Peter develop a relationship out of mutual respect. Being forced into close quarters helps them to recognize the strengths and weaknesses of each other, but also to bring on a friendship that might not have occurred outside of the Annex. Peter appreciates Anne's creativity and her boldness: "I thought you were fine just now. You know just how to talk to them. You know just how to say it" (2.1). Anne begins to accept Peter's down-to-earth nature, but more importantly, his willingness to listen.
Both kids are dying to have another person their own age to talk to and Peter symbolizes the need for human relationships and friendship in the play. Even Margot admits that she's a little jealous that Peter and Anne have each other to talk to: "I'm jealous, jealous that you've got something to get up in the morning for" (2.1).