Why Do Narcissists Pathologically Lie?

Why do narcissists lie and why do they struggle to tell the truth? Why do they often lie even when there is no apparent reason for them to lie?

We may begin to question everything including our own sanity. We don’t know what is true or false anymore and things get so crazy that we start to question if the narcissist knows the difference.

How do we reconcile that not only were were lied to, but also the entire relationship that we had with a narcissist was a lie? How do we heal and recover from that?