Pathological heartlessness, combined with egomania, characterizes humanity’s most dangerous predators.
Extreme narcissistic malignancy characterizes the most disturbed characters among us. They wantonly use and abuse and feel entitled to do so.
Sadistic aggressors are archetypal bullies who can’t love and revel in the lording of power and control over others.
Relationships with heartless characters follow a typical course. You get seduced by the tremendous interest someone shows in you. And most importantly, you mistake the interest for caring. Only later do you realize how utterly expendable you are, especially once you’ve outlived your usefulness.