Many people dont know all the signs of narcissism, but if one see any of the red flags in a guy, whether he is a player, abuser ( players are abusers ) or are a narcissist, low level or full blown, leave him behind because someone who shows to be rude, a jerk, or abusive or totally off, is not going to change, so better to leave them behind before beeing sorry. I agree no second or third chance, at least not a third!

It also say about sociopaths, practice the rule of three : 1 lie can be a misunderstading, 2 lies can be a serious mistake, 3 tells you are dealing with a liar and deceit is the lincpin of concienceless behavior. Cut your losses and get out as soon as you can! ( taken from the book "the sociopath next door" ) by Martha Stout.

There are many ways to recognize for example a narcissist. There are also body attitude how they carry themselves.

I would advice eveyone to learn all they can about narcissim, sociopathy/psychopathy because it can save people from becoming played and entangled in a web thats hard to get out of and it will prevent you from getting hurt.