Getting over a relationship with a Narcissist is a much different kettle of fish.
I think the hardest thing to get over is the deliberate mind fuck, the psychological warfare that the Narcissist uses to keep his victims emotionally invested in him. The mixed signals of I love you one day and hate you the next, has women and men not only questioning their sanity, but their sense of self-worth as well.
They will go to great lengths to isolate you from friends, family and other sources of support.
Once a relationship with a Narcissist ends, most victims are left with the enormous task of weaving through all the lies and the abuse and building themselves back up.
To a Narcissist, their partners are objects, a source of supply, nothing more.
And coming to terms with the fact, that you meant nothing, to someone who meant so much to you, is incredibly painful.