From the way he's been texting me NOTHING has changed.
That's because nothing has changed except he's been substance free for 3 weeks, and that might not even be true. If a cell phone was able to be sneaked in I'm sure drugs/booze could be to.
Someone who is serious about getting clean/sober and being honest doesn't sneak a cell phone into a rehab .
I can't blame you for being anxious, as you are witnessing nothing has changed.