That the OW has no clue is not important. Her place in the drama is not relevant to him replaying these memories and patterns. She is nothing more than a tool to make his need to replay possible. In ways she is playing the role of his mother in the pattern. She has the correct skills to do that on a base level.
Actually, I think it does matter in my husband's case. She believed he is really tough and that no one could ever lay a hand on him. While on one level I think he is playing his father in all this, at another level I think he is playing himself and projecting an image of himself as someone who escaped the abuse altogether because he was strong.
That the OW does not know of his previous abuse is part of her roll in this drama. It is so common that it is part of the script described within the relationship. It is so common that it is listed in articles, for example,
#10: MOST MEN IN MIDLIFE CRISIS HAVE AFFAIRS
The other woman knows little or nothing of his history or flaws. The mid-lifer feeds the other woman rewritten history about his spouse. She starts the relationship by idealizing the mid-lifer. The mid-lifer can portray himself as heroic, perfect and accomplished. Both individuals are living a fantasy.
He cannot play out this roll as easily with someone who knows his history since he is rewriting history and trying on another persona.
If she didn't fit the roll, she would not have been cast in it and someone else would have. And that qualification was not deciding but convenient for him as he doesn't even have to be all that careful or specific or detailed in his rewriting of history because she didn't have a clue. That's the qualification she brought to the table and how perfectly expendable she is. That's a part of keeping the fantasy alive for them.
But in the long run, it is just very unimportant as it is not a lasting quality.
Lp
What I find a bit odd is that it was important for him in the beginning of our marriage for him that I know about the abuse. He acted odd, and he felt he owed it to me to explain his odd behavior, and he did so in light of his childhood. And I accepted him that way. And he knows that. He knows he doesn't have to be fake with me. I love him as is. He doesn't need to act. But he was not as successful in his career before now (things are really good at the moment) than he would have liked and I am the only one who knows that and it is a secret I keep for him. So maybe he wants someone who doesn't know that. But I am just proud of him now, I don't care about the past and I have told him he is getting what he deserves now in terms of his career success.
What do you mean that it is not a lasting quality? Is it because keeping up the act gets harder and harder and more stressful?