There is another dimension to this kind of encounter--perhaps one you have not yet become aware of. Not all men (or women either) are socially well-rounded, or oriented to others (women particularly) in a positive way. If you have not yet explored the psycho/social dimension of the Narcissist, I believe it will be very instructive.
Narcissism is, essentially, a warped psychological perspective. People who are afflicted with this mental orientation believe they are superior to others, and that anyone they spend time with will (and should) admire them, look up to them, and take their advice as "gospel".
Narcissism as a psychological orientation begins in early childhood, the result of parental treatment that is unhealthy--the child may be treated as someone very special, wonderful, brilliant, perhaps the idol of his parent's "eye". His self-assessment is seriously warped, and he imposes it on anyone he meets. If he is not discouraged in his mental obsession with himself, if he is not subjected to the lessons of a life experience that teaches him humility and compassion, he won't have either.
The guy who "neged" you was certainly no friend--and I'm sorry you went through that demoralizing experience. Some narcissists are sociopaths. Sociopaths are, arguably, born that way, For a quick and informative review of the effects of sociopathic behavior on others, you might read "The Sociopath Next Door" by Martha Stout, Ph.D. (psychiatrist). For a good assessment of Narcissism, you might read Why Is It Always About You? : The Seven Deadly Sins of Narcissism by Sandy Hotchkiss and James F. Masterson (one of MANY books on this popular topic).