This is a complicated answer. I am not a psychologist, but from what I understand as a former supply for a narcissist, even if you are no contact, if you have any exposure to their lives, especially in social media, or mutual friends who might try to pass information along to you about the narcissist, as far as the narcissist is concerned, you are still giving them emotional supply. They are still feeding off the thoughts that you might be suffering because of what’s happening in their life. For this reason they will often go to extremes to post things on social media or sneakily pass messages along to you through others in hopes that you will be affected by them. They really believe that you will be hurting and they get off just on that negative thought fuel alone. Therefore, you should really cut off all means of seeing anything about them at all. Once they realize you have done that, and that you are serious about it, that will stop them from getting fuel from the idea of causing you suffering. Inevitably the lack of exposure will make it so that their lives don’t impact you at all, and that’s the ideal.