Thank you to you all for the replies.
I now know that texting him was probably not the best thing to do, but it is all I could do at the time. It was just so very strange to me. It still is and I still feel like I deserve a conversation, not just a text.
I don't want to walk away. I feel like I want to support him even more now that he has decided to get clean.
I know I have lots to learn and am probably doing all the wrong things. I'm just going with my gut.
I will continue to educate myself.