Hi Mags1, I know how your feeling, I went through this with my husband a few years ago, found he was looking at and subscribing to porn sites. It broke my heart and when I confronted him he didn't want to talk about it either, I think he was embarrassed.
I don't recommend you do what I did, I shut him out, got really depressed and sad, wouldn't let him touch or kiss me for weeks until he talked to me about it, even then I found it really hard to forgive him and move on. It nearly broke us but we got through it, I hope it works out for you both, stay strong and know that he is the one choosing to act and do what he is doing and don't blame yourself. Your sobriety is awesome!!!