Dreams involving crowded settings can often symbolize feelings of being overwhelmed or lost in your life. The boy from three years ago may represent unresolved feelings or nostalgia for the past. His smile might indicate that there are positive memories or emotions associated with him that you still carry.

The transition to talking with a new friend suggests a desire for connection or companionship, even with someone unfamiliar. This could reflect your subconscious seeking new relationships or support in your current life.

The disappearance of both characters at the end of the dream could indicate feelings of impermanence or the fleeting nature of relationships. It may be worth reflecting on your current social connections and any feelings of loneliness or longing for deeper friendships.

To gain more insights, consider what emotions you felt during the dream and how they relate to your waking life. Are there any unresolved issues from your past that you need to address? Are you seeking new friendships or deeper connections? These reflections can help you understand the underlying themes of your dream.