Sis,
I know it's counterproductive to argue with an addict but.....when you bring up the fact that you bought the drug tests because he said he would take a drug test...uhhh....does he have any response to that?
I know for a fact that the only reason my addict brother isn't using right now is because of the random drug testing. He fears it just enough to not use. So if I were you, recovery or not, I would be thinking along the same lines if I were in a marriage to an addict: you want me to stay? then this needs to be what happens. I love you, honest to g*d I do, but this is the line, right here in the sand.
Just me...sending you hugs and strength to get through this war. Do you have a plan in case things don't get better? You don't want to waste a lot of life on a horrible stressful situation like this if he won't knock it off.
Love,
GL