The Borderline Narcissist - Confusion

Ever date or have someone in your life who could cycle between idealizing, loving, affectionate, needing your attention, sentimental and then contemptuous, raging, and discarding-- all within the span of an hour? And then the whole cycle would start all over again? Did bewilderment usually predominate as the main emotion for you? Then you were probably in the zone known as Borderline Narcissist Land.