take some deep breathes..
In a full slow inhale
Let it out very slowly through your mouth
You know he is out using.
You didn't CAUSE it.
You can't CONTROL it.
You can't CURE it.
If he really wanted to be clean he wouldn't have left rehab.
And he would be going to outpatient or NA or something tonight instead of using.
He would have responsibly told you where he was, what his plan was and approx when he would be home and whether he was eating at home or out etc.
Have you been to al-anon or nar-anon?
That would be helpful to you.
I suggest you read the stickies at the top of this forum.
Please make yourself at home, post all you want.
You will meet alot of great people here who can share their experience, strength and hope.