Triangulation is a term that describes a narcissistic manipulation technique where they’ll triangulate three people (typically themselves, a wife, and a mistress). I have been involved in many triangulations in my life, as my ex-husband was a narcissist and there have been many other narcissists in my life. My husband triangulated me from everyone, including my parents, my brother, friends, everyone. One of the most common triangulations is of a wife and a mistress/girlfriend