Sometimes we have this dream that our loved one will go into rehab and come out "all better". They don't.
Sometimes it takes more than one go in rehab for the message to sink in for them. It's a lot of hard work to recover from addiction. If they aren't willing to do the work, the likelihood of relapse is high.
I hope you don't mind if I ask you a couple of questions.....While he was in rehab, were you able to participate in any family groups? Are you currently attending any meetings to help you cope with his addiction such as Alanon or Naranon?
The reason I ask is that addiction affects us as much as it does the addict. We usually are "dancing" with them. The dance will make us feel terrible. Often, when we are able to identify and correct our behaviors, things certainly get better for us......whether the addict continues to use or not.
I'm glad you found us and I hope you stick around. There is a lot of collective wisdom here on SR. I have found great comfort here and I hope you do too.
gentle hugs