Answer:
Jeremy doesn't like how his brothers act with T.J .
Step-by-step explanation:
Jeremy does not agree with how his brothers treat T.J, since they act kindly when they are with him, but when he leaves, they laugh at him.
Let's look at these lines of the text: "They treated him almost friendly like, but when I left they laughed and talked’ bout him — called him names. ”
This is the reason why Jeremy does not like his brothers and prefers to be alone.