In chapter 8, why does Huck decide not to tell anyone about Jim’s escape

Huck also finds himself an outcast much like Jim. It also does not take long for Jim to endear himself to Huck. Huck likes Jim and he is sympathetic to Jim's predicament. 

i really dont know i ddidn't read the book im stock on this as well can someone help us out thank you

Huck feels that he and Jim are both on the run and are similar. I also believe huck doesn't want to be alone.