Re: ...and, possibly BPD

"He doesn't have the history for Borderline's usual enviroment"

First of all, there's no such thing as a "usual environment" for someone with BPD - debate still rages as to whether or not BPD and/or sociopathy is genetic or learned, though there have been plenty of these types of people who were raised in loving, nurturing environments and still fit the profile of a sociopath to support the theory that they just are.

From your descriptions, this person fits the profile of a full-blown sociopath.  Of course, I'm not qualified to diagnose anyone, especially based upon a third-party description.

This guy is very, very bad news and it's very unfortunate that your friend is going to have to learn the ugly way about him.  For your emotional well-being, stay out of it and learn as much as you can about sociopathy.  At some point, this is all going to fall apart - hopefully, sooner than later.  When it does, your friend is going to need support and encouragement.

I strongly recommend the site:  www.lovefraud.com  This site was developed with the intent to educate the general public about sociopathy (aka Borderline Personality Disorder Cluster B Traits) and has evolved into an extraordinary healing blog.  Check it out, and be good to yourself.

As an aside, I can't imagine how difficult it is to feel labeled and stereotyped as you do.  Know this one thing:  you are a valuable human being with something important to do in your lifetime. 

Best wishes!