Hey Jean,
This is obviously a difficult situation with a lot of hurt emotions and things from the past affecting your current relationship. The addition of this woman from his past obviously isn't making things any easier. The main problem sounds like your husband is confused and doesn't exactly know what he wants. You have a very clear idea of what you are looking for, which is to start over and work out these problems from the past. That's a respectable and admirable goal. Marriage counseling would be extremely beneficial considering the amount of baggage in this relationship. With the commitment of both of you it is often possible to make most relationships work. However, he needs to be on the same page.
Unfortunately, I don't think there's anything you can "do" to make his decision more clear to him, or get him on the same page. If he is confused, the last thing you want to do is push him to make a decision that he is not ready to make. That tends to breed resentment. You also don't want to engage in some type of unspoken competition for your husband with this other woman, because your husband needs to love you and want to be with you for who you are, not for what you have to offer over this other person.
The only thing you really have control over in this situation is yourself. You don't have to sit in limbo while he takes his time with this. If you've had enough, you can ask for space, or separation. Sometimes that's what a person actually needs to see things more clearly. If you can hang in there longer while he figures this out, that's okay too. However, there's not going to be a trick to make him see that he should be with you. He needs to decide that for himself, and then commit to it 100%, which would probably mean cutting off contact with this other woman. If that's something he's not willing to do, or a decision he can't make, then you'll have to handle the situation accordingly for yourself.
Hang in there Jean, sounds like you've got some real tough decisions on your hands. Feel free to contact me if you would like to talk more about it.
