Because of their disorder. They lie about everything. EVERYTHING. Run!
Because he's a narcissist and they lie, lie lie. GET AWAY FROM HIM!
Yes he would, but take a peice out of him and he'll take a chunk out of you, best thing to do to a narcissist is to ignore him, that will affect him more than anything.
They lie some more....the N I'm married to will lie about the lie he lied to cover up the lie about the lie he lied....and then lie again... New answer-They say you are having too much imagination and then they lie again explaining the other lies with new lies....mine told me i should go ahead and write a fiction book ....
They will lie. They will say what ever is best for THEM.
A - How do you know they are narcissist? B - Why do you assume that the friend doesn't already know? C - Why do you think they might want to know? D - Is it any of your concern? If you can satisfactorily (and honestly) answer those questions then yes, tell the friend, otherwise leave the matter lie.
Narcissists need to keep their various relationships and acquaintances separate from each other so that the various groups or individuals cannot get together and"compare" notes since the life of a narcissist is based on lies, illusions and delusions. This is essential to the narcissist because they lie so much about everything and because they create false "realities" in order to impress others.
In my humble opinion, they have no chance of any meaningful relationship because of the inability to love. This is a very difficult combination; the borderline will have a deep fear of rejection and so does the narcissist. The Narcissist is likely to lie and cheat which compounds the Borerlines fear of rejection, the lack of empathy from the narcissist replays the early injuries to the Borderline. There is a very good book. The Narcissistic/Borderline Couple - A Psychoanalytic Perspective on marital treatment.
A borderline. Essentially a more emotionally reactive narcissist.
Since narcissists are typically very dishonest, there may be little difference observed between pathological liars and narcissists, but there is a difference in the way they think. A pathological liar has a compulsion to lie, and will often lie even when there is no personal gain that can be obtained from that particular lie, although such a person will most definitely also lie for reasons of gaining personal advantage. A narcissist is a person who loves himself or herself to the exclusion of all others, and believes that only he or she has any importance. Other people have meaning only to the extent that they can be used to serve the needs of the narcissist. It is a very nasty kind of personality disorder, which we might succinctly describe as absolute selfishness.
He is a narcissistic jerk.
If you want to punish one, just ignore him. They hate to be ignored!!Answeryou be nice to them and praise them then get them to do what you want. Bust them in every lie, which basically means every thing they say to you, not being brash, but I have been with a narcissist for 10 years. There is no dominating a narcissist. You will have sex with one of their friends, to get back at them. They will have sex with your brother, or sister. There is no feelings of remorse, from them. If you are not doing exactly what they need, then they don't need you, or will make you feel like crap.
The narcissist creates the image that he/she wants the world to see. He/she can only do that when the truth isn't available to the audience. If the narcissist keeps his/her life hidden then 1) he/she can lie about that life and continue grandiose delusions, or 2) avoid taking responsibility because he/she can continue shift-blaming. Moreover, perhaps addiction is a factor. If your ex uses, then secrecy is part of that addict behavior. Whatever the cause, count it as a blessing that you don't have the details, and reciprocate. Any information that the narcissist has about you will be used to manipulate you. Being open and honest is fine... with sane people. Minimal contact if necessary, and no contact if possible.