mm i have some issues that seem to overlap in both categories.
borderline, you idealize people and then devalue them, feel empty frequently, there is a lot of instability, rage/ impulsive behavior
dependency, feel the need to be continually 'taken care of', very sensitive to disapproval from others (im sure you can get more about what this is from the sticky thread at the top, the link there).
im no professional, but my two cents.. for me these overlap that i have idealized the person i get dependent on.