I have no plans to do drug tests. To me, his behavior is most important. There are all kinds of addictions and compulsions out there. He could get involved in any number of things that didn't involve drugs that would leave him emotionally & physically unavailable. I think that if it got to that point, it would probably be time for me to leave. I'm trying to stop checking up on him because that is not what I want to be doing with my life. We don't have any kids in our house anymore, so that's not an issue.