Why is Bimz worried about Gabriel's friendship with Gotti in the novel, Who They Was?

Bimz is one of the friends who warns Gabriel about Gotti's untrustworthiness. Believing that Gabriel is compromising his true self in order to impress Gotti, he urges his friend not to invest too much in their connection. Bimz also worries that Gotti's many enemies will soon become Gabriel's, and that he will be put in danger.