Wondering question about a legal divorce?

My husband and I have been legally separated for 5 years. A divorce was paid for by an attorney by him. I was never served with papers because he says "he didn't want me served at work" and I never signed anything. I was told when asked that the lawyer went out of business. My husband and I are on very good terms see and talk to each other daily and share a child. His family however, are very sketchy people that are very money hungry. My husband lives with his father and has 2 brothers and 3 sisters. Recently he said I have something to tell you and said I can't have this house until we are divorced and they are making me divorce you. I was shocked because we have been working things out so well. After doing some research the attorney that "went out of business" just moved to a different town. I am wondering could a divorce have been forged or false done? We share one child together that is legal (21) and I am just wondering if there is any way it could have been done without me knowing. The people in his life now are very against me and as I mentioned his family is very money hungry. His father is in bad health and something is trying to be resolved over his home. Now out of the air he is saying we have to get a divorce for him to get the house. Does any of this seem right or legal? Any help would be appreciated. Thanks