Are there specific patterns or habits that make it easier to spot when a covert narcissist is about to exit a relationship?

Have you ever told a little white lie to your parents to cover up something embarrassing? How did it go?
What is a small gesture your boyfriend's family made that made you feel truly welcome?
Has your dog or any other pet ever behaved strangely around a particular person? Did you eventually discover something about that person that later confirmed what your dog saw as disturbing or fishy in that person?
When your initial doctor's path seemed closed, what was your immediate next action for seeking further medical advice?