Remember you can't believe anything he says and only half of what you see. After a while separated you can see this is true. I know. You may have not known him (who he is now) for a while. Accept this. Most want us to think that we know them. This helps him/her to continue in denial and live in their own secret lives. Let him know you don't know who he is. There's nothing wrong with that fact. He may not know who he is either. Being truthful is better than leading him down the path of self delusion. Don't participate on enabling him to continue on deceiving you. Start GALing and concentrate on you and family.