Confidant
From Wikipedia, the free encyclopedia
A person to whom private information is disclosed.
In theater, the confidant (feminine: confidante, same pronunciation) character is usually someone the lead character confides in and trusts. Typically, these consist of the best friend, relative, doctor or boss. The confidant character is most common in romantic comedy film but often appear in other genres.
Examples of a confidant character, would be Rob Reiner to Bruce Willis in The Story of Us, Kevin Pollak to Matthew McConaughey in The Wedding Planner or Charles S. Dutton to Johnny Depp in Nick of Time.
An unusual take on this idea is used in the first season of the drama series 24, in which the main character's confidant is revealed to have been acting against him throughout the events of the day.