Clarity...you just found out that he did this a long time ago before he got clean/sober? If so...you probably don't know a lot of things he did while he was using. Addicts lie...all of them...it is part of being an addict. They also do things they would not do if they were sober. That being said, it does not excuse it. I think this new information you are uncovering is something you need to discuss with a counselor. Part of AA is asking making reparations to the people you have harmed. He has not done this and you are experiencing why it is an important part of recovery. You can't bury your head in the sand about this, but I suggest you get professional help dealing with this.