Don't interact with men who display narcissistic traits.
No.
Because they are narcissistic.
In general, yes. the narcissist feels that he is very special and "deserves" the affair.
They are very full of themselves and hard to be around. I would confrunt them and tell them how they are acting or just avoid them and go on with your day. This person may be a narcissist because this is typical narcissistic behavior. Narcissist like to think they know everything and cant stand others around them to be smart or question them. A narcissist will tell a baker how to bake, a teacher how to teach ect...or they will edit a good answer because they didn't write it, nobody else's opinion is any good to a narcissist, actually its an insult to them that you don't agree with them. I agree with the previous post....avoid them.
There are technical differences, but it is largely a matter of degree. Neither is likely to ever be a decent partner.
A borderline. Essentially a more emotionally reactive narcissist.
To avoid pregnancy.
He is a narcissistic jerk.
Some men like to play "hard to get". Some men are afriad to talk to someone they're attracted to. Some avoid in light of rejection. Just depends on who you are.
Be careful if you do, the narcissist can be a monster to anyone who hurts their pride.
It's certainly possible. A narcissist may date another narcissist that is more selfish than they are to feel better about themselves. In turn say "i'm not as selfish as he/she is so that makes me above him/her). It's incredible and shocking the way people with this disorder think. It takes a lot of research to understand a narcissist.
It is possible to show up a narcissist publicly, but if you do, the narcissist is going to be very angry at you. It is not always a wise strategy to make enemies.