Boundaries: help or hindrance?

A reader asked about her sociopathic-seeming significant other, bringing up an interesting point about boundaries:

He knows he has thing's inside of him that work different from most people. I don't like to say, "normal" because to me, he is pretty normal or tries to go with the flow as much as he possibly can. I know to always be on my guard, and I have noticed that if I seem more like it does not bother me and if I am more stern with my remarks and answers, he seems to like that. Is that normal I suppose.

I don't know if I can speak for all sociopaths on this point, but I myself like well-defined boundaries, at least in personal relationships that I am interested in maintaining, and it sounds like he is the same. It is a little unusual for a sociopath to be in such a long relationship. By now he no longer derives most of his pleasure in the relationship from the constant acquisition of power, through playing games with you, seducing you, etc. You must provide something else to him that he values enough to try to keep the relationship working, whether stability, a front/beard/respectability, money, someone to take care of his kids, intimacy, or any other number of things. Basically you are still a profitable endeavour for him -- he may pay $100K a month to keep the thing running, but he gets at least $101K a month in return, so he'll keep that up forever. In other words, his brain is constantly running a cost benefit analysis of staying with you: all the time and effort it takes and possible negative consequences ($100K) compared to all of the benefit he receives ($101K). Just like a business, he might let things dip into the red here and there on a bad month, but ultimately will not continue seeing you if he sees it as a losing endeavor.

You being stern helps him keep the account in the black by reducing expenses. There is always going to be a certain amount of waste in a business, including breakage of merchandise, worker injuries, broken machinery, or hurt feelings. To fix that, businesses establish rules to promote optimum precautionary measures. For instance, instead of the business paying thousands of dollars to replace broken merchandise, they institute rules about putting breakable merchandise on the bottom shelf. Simple measures like properly training workers and forcing them to wear safety equipment (boundaries), can keep costs down and a business solvent. You are performing the same function with him when you establish boundaries. Instead of little things building up until you melt down emotionally (broken machinery), you are training him how to properly operate your machinery, so to speak.

Of course he will still do some things to hurt the business intentionally for his own gain, maybe the emotional equivalent of embezzling money, but when he does those things intentionally, he has no problem with them. Just because he kicks around the furniture one time does not mean that he wants to be accidentally stubbing his toe two weeks later. So some "stern" things you say will just make him angry and defensive, but if your sternness is just a matter of routine maintenance to prevent catastrophe, he will welcome any advice from you just as you would welcome the advice of a trusted mechanic.