Regarding "sex addict saying "I'm only a sex addict when I sleep with married men, but not when I sleep with guys who only have a girlfriend."" in the post above...

I am not sure if sex addiction exists or has a good definition if it does, but I am positive that the relationship status of sexual partners cannot have anything to do with this definition. Addiction should have something to do with daily functioning. So, if you run a company and sleep with your CFO's wife or girlfriend, that is not addiction, it is a personal choice - why, because you are still able to run the company, so you are still highly functional. And if you sleep with your competitor's board member, still not addiction, because it does not interfere with your daily functioning. The relationship status of your partner is irrelevant.

An example from MW: "His life has been ruined by heroin addiction." (my emphasis).

So the keyword is RUINED. Not functional.

I know it is at best tangential to the discussion, but when I see something that is off to THAT EXTENT, I comment .