When he accuses Shmuel of stealing food to eat, Shmuel tells him that Bruno gave it to him, and that Bruno is his friend. But when Lieutenant Kotler asks Bruno if he knows the boy, Bruno denies it. Lieutenant Kotler tells Shmuel to finish polishing the glasses, and that when he brings him back to the camp, they "will have a discussion about what happens to boys who steal" (173). When Lieutenant Kotler tells Bruno to go read his book, Bruno obeys and leaves the kitchen, feeling incredibly guilty about having betrayed his friend.
For almost a week, Shmuel does not come back to meet him at the fence. When his friend finally returns, his face is covered in bruises. When Bruno asks about his injuries, Shmuel says it doesn't hurt anymore. Bruno apologizes for letting him down and says he's ashamed of himself. Shmuel smiles and forgives him, lifting up the fence so that they can shake hands beneath it. It is the first time the two boys have ever touched.
I don't know what I would have done in Bruno's shoes. I'd like to think I would have been brave and admitted to my part. None-the-less, Bruno is just a little boy. Put yourself in his shoes.