What are the five levels of relationships as described in the chapter?

The five levels of relationships described in the chapter are: Stranger, Acquaintance, Companion, Brother/Sister, and Friend.

The chapter outlines a progression of relationship levels, starting with 'Stranger,' where initial introductions occur. The next level is 'Acquaintance,' where basic facts are shared. 'Companion' follows, involving the sharing of opinions and engaging in activities together. The 'Brother/Sister' level involves sharing emotions and forming deeper bonds. Finally, the 'Friend' level is where secrets are shared, requiring a high level of trust and mutual understanding. Each level represents a deeper connection and commitment.