Opinion
Narcissism is a personality disorder not a mental illness; a narcissist is perfectly capable to make the distinction between right and wrong. If you wanted to ask if a narcissist will ever admit to others that he is one- NO-he will not alert the future victims and face the consequences of his actions.
Opinion
Individuals with narcissistic personality disorder are usually unwilling to acknowledge their disorder. Although some may recognize the difficulty they have in their relationships with other people, they blame others for those problems. They are unable to modify their behavior. They have a conviction that they can do no wrong. They often have a defective ability to interprete other people's speech and actions which leads them to think they are liked and respected. One of the striking hallmarks of NPD is the utter lack of self awareness. Many do not recognize that they have a problem at all. If they do suspect they have a problem they are more likely to step up their self defense, reject outside intervention and avoid introspection at any cost and so they are doomed to repeat their failures and mistakes.
You would call a person who praises himself a lot a narcissist.
There is no evidence that he is a narcissist.
No he is a Narcissist and only believes in himself.
Well of course. That's a how a narcissist valids himself.
The Defining characteristic of the narcissist is grandiosity. The narcissist is more likely to be attention seeking, envious and to desire admiration.The defining characteristic of the sociopath/psychopath is callousness. The sociopath/psychopath is more likely to engage in illegal activity, to be aggressive, impulsive and deceitful.
There is no single answer to your question. It is likely that they may clash.
Why bother? He will only be falling for those bits of himself that he sees in you.
A narcissist and more extreme would be psychopath
Yes. Go onto: www.google.com Then type in: Treatment for Narcissistic Personality Disorder?" Don't be surprised to find that there is little help because Narcissists are not labeled "Narcissistic" without a good reason. They feel they are right and everyone else is wrong, so it's highly doubtful they would ever seek counseling and if they did they wouldn't believe what the counselor told them anyway. Few Narcissistic people are every helped and therefore it's difficult to really study a group of people that are narcissistic.
Because he's a narcissist. It's what he does. Likes himself... Also, he may be a tad too busy imagining how great he looked when he orgasmed...
someone who thinks he is so handsome that becomes in love with himself.
An egotist or a narcissist. As far as I know as egotist line of thinking revolves around himself, he it always boils down to himself and his importance whereas a Narcissist is a person who values and loves himself too much. For him, the center of the universe revolves around him and this kind of behavior usually makes him a very unlikely character to be with.