It’s where someone you previously dated (and very likely cared for) or were
even in a relationship with, ghosted you, only to then resurface some time later, most likely in the form of some sort of social media interaction or an out of the blue text message. Usually the zombieing happens just when you’ve gotten over the hurt of having them
ghost you in the first place. Then, all of a sudden, they subtly reappear (I
say subtle – it can feel like a slap in the
face!) causing more emotional upset.