One thing I learned from my relationship with my AXBF is to listen to the addict's actions and not their words. Talking can raise our hopes when we express our frustration and in response the addict tells us what we want to hear, but only actions can really demonstrate a dedication to recovery.
I'm sorry to say it, G, but from everything you said in your last post, I don't think he's done. The reassurance he gave you by text sounds kind of vague and not like a solid plan for recovery.
Time will tell more. Have you thought about going to Nar-Anon or Al-Anon? Face to face support can be so very helpful.