Why does sonnys friend feel responsible?

Sonny's friend feels responsible because he has a deep sense of loyalty and connection to Sonny, understanding the struggles he faces. He may believe that he could have done more to support Sonny or guide him away from the challenges he encounters. This sense of responsibility often stems from a desire to help and protect those we care about, especially when they are in difficult situations. Ultimately, it reflects the complexities of friendship and the emotional weight that comes with it.