You know, the stories he told me about when he was a child paint a picture of someone fairly normal growing up, so I don't know how biological it was. But from the time I met him to the time I broke it off (~6 years) his condition had gotten so progressively worse, that he couldn't even lie consistently anymore - drug abuse might have had something to do with this, idk. The funny thing is, during those 6 years I was the only person who treated him fairly enough and took enough of an interest in what he said to quite literally become his confidante and best friend. He literally told me everything about his interests and his life, which he loved to talk about. He still tried to cheat me from time to time though, and to hurt me emotionally nearly every time we met, whenever it looked like I had the upper hand in something - he saw everything as a competition between us.
He told me everything about his life, provided very direct insight into the psychopathic mindset. He even told me how to manipulate people in certain situations. He saw himself in the role of a teacher. It was very uncanny and at times shocking to talk to him. If he really was a psychopath, then at least I can say I have something of a unique perspective about them.
I've typed him as SEE btw, or Se base at the very least. I can't say how much his pathology contributed to the typing without further investigation.
Why thank you, but you don't seem unhealthy to me. You seem like a very nice individual.

But what makes you think you're unhealthy?