Leaving out the MDMA part, this matches my experience with sociopaths. Because they're less repressed they're more fun, almost a guaranteed good night out, but

Leaving out the MDMA part, this matches my experience with sociopaths. Because they're less repressed they're more fun, almost a guaranteed good night out, but they push & push & push and don't know when to stop, and won't stop (except for a short while) if you warn them, until finally the relationship (platonic I mean) gets too much and you finish it. And they can get quite upset about it, this no-emotions thing for sociopaths doesn't really match what I've seen. They seem to be empty inside, an unfillable hole, but certainly not emotionless.