that you cared about There’s no one answer to this question since everyone has a different story. It’s possible that someone became heartless after being repeatedly hurt or disappointed by others, and they decided it was easier to just not care anymore. Or, they may have experienced a traumatic event that numbed their emotions. It’s also possible that they simply never learned how to care properly in the first place. Whatever the reason, heartless people are often guarded and closed off because they’re afraid of getting hurt again.