I think it's great that it's your "me" time. Recovery needs to come first, be #1. I think telling him as much as you're willing to is just fine. My husband was skeptical of me spending time with strangers at first, and I'm sure he still is to some degree... i'm sure we have a certain level of unhealthy codependency going on anyway. But as he's seen changes in me, I think he's come to understand it's a good thing... hopefully your husband will get it soon. Actions do speak louder than words, after all.