You must go on with your life like he is a ghost
prepare for the worst and hope for the best
you can't let his addiction cost you everything
you have to concentrate on being strong yourself
it's a "family disease" are you doing what you should be doing ?
you need to work your program and let him work his ...
meet in the middle with an Addiction Therapist if you can ...
if you can't afford treatment, save up for a session with an Addiction Therapist, talk about getting the benefits of rehab (drug testing) ...
Use a Therapist to direct him into a 12 step program;
Get him into a gym; get him involved in a new hobby, you and he go to "open" meetings of Cocaine Anonymous, or Narcotics Anonymous. Go and make a night of it. See if he will. An addict that wants you and they to make it will "go to any lengths" to do so,
NA and 12 step programs is like committing to Church.
You work the steps (focused around fully being accountable).
If an addict cannot or will not go to these lengths, chances are they are "trying to fool you".