1, gender differences: confidante usually refers to the deep friendship between men and women, while confidante refers to the deep friendship between men and women.

2. The emotional nature is different: the relationship between confidantes may contain certain emotional elements, such as admiration and liking, while the relationship between confidantes in Blue focuses more on the singing of the soul and emotional understanding.

3. The purpose of communication is different: the communication between confidantes may involve more emotion, sex and romance, while the communication between confidantes in blue involves more social responsibility, career development and personal growth.

4. Different intimacy: The relationship between confidantes may be more intimate, and there is intimacy between confidantes, while the relationship between confidantes is higher than that of ordinary friends, but usually it does not involve intimacy between men and women.