What do you mean you're happy and I'm happy?

"I am happy when you are happy" is a way of expressing feelings, which means that when you feel happy, I will feel happy. This expression contains positive and intimate emotional connection, and is usually used to express the tacit understanding, mutual support and friendly relationship between two people.

This expression can also be interpreted as "your happiness is my happiness", which emphasizes emotional enjoyment and interdependence, and expresses the emotional state of mutual satisfaction and mutual satisfaction.

In short, "I am happy when you are happy" is a positive, intimate and happy emotional expression, which is suitable for expressing tacit understanding and support between close friends and partners.