1. 红颜：05、当爱情经过的时候 When love pass | 06、红颜 Confidant | 07、值得一辈子去爱 Worth to love the whole life

2. 知己：comrade=同志; | confidant=知己; | partner=伙伴;

3. confidant的意思

3. 密友：confessional disturbance 供述障碍 | confidant 密友 | confidence 信心

4. 心腹朋友, 知己：confessor || 自白者, 为信教而被迫害的教徒 | confidant || 心腹朋友, 知己 | confidante || 知己的女友

1. 男性知己（或密友）
    Someone''s confidant is a man who they are able to discuss their private problems with.

confidant的解释

    e.g. ...a close confidant of the president.
           总统的密友

1. someone to whom private matters are confided

    Synonym: intimate