I am glad there was something in there to glean because I really felt most of it was discounted. I take that in stride because I discounted much of it when I was where you are. However, I am not sure how I would ever answer your recent question. I know sometimes it's frustrating to hear but both of us could have chosen something different.
You are saying you did X,Y,Z, were exhausted by the efforts, had an affair that was going to be a fling and stay with your husband, but then became more like an exit affair. Because divorce wasn't an option? So if we take affair and divorce out of the options...
I guess the other options would be: Accept what you can't change and find a way to adapt? Or have an open marriage? There aren't many choices left.
I am really trying here, but it feels like you want the answer to be its understandable you had an affair? It's understandable I had an affair? I just don't think that's a sane answer. We all know what led to our affairs, and once you are remorseful of it you know how bad it was. And, once you know how bad it was, Divorce does seem a heck of a lot better, or anything else would seem a heck of a lot better.
I relate to you because in the course of the fling you begin to magnify the deficiencies in the marriage...rewriting it in your mind to be worse than it is. (you may not believe that right now, I didn't) I know because I did this and that's how it came to be almost an exit affair for me. And you haven't gotten to remorse, or to see the damage even because your husband does the pick me dance instead of making you walk a hard line.
You have to understand that all of the people responding to you are waywards. None of them are betrayed spouses. Most of who responded have gotten themselves out of infidelity. The reason they are answering the question the way they are is because it's truthful. Most of us have had to watch our spouses suffer immensely and have deep remorse for what we did.
I am trying to explain this to you because you have to stop reading this as people shaming you. They are just trying to answer your question. The answer is anything but this.
As long as you stay in the affair, you do not have remorse for what you have done. You would not want anything to do with the AP. Unless you climb the ladder you won't see the viewpoint.
Again, I am really not trying to shame you. Obviously I did the same things. All these others have done the same or similar things. We are all just at different stages of the view point. I don't think anyone can help you at this point, because there is always another reason or layer that you put on it to discount the responses. I really hope you will reread this with fresh eyes on another day but honestly most everyone here is trying to help you.
You say there is 2% of you that thinks wait on the divorce. That's okay, I get that. But, that 2% is not going to change unless you give up your AP, and you really hold up a mirror. Nothing else can change until that changes. Not your husband's codependency, not your level of remorse, or your level of being able to understand where folks are coming from on this. You will find no one here that will be supportive of having an affair, because if we did we would not be helpful at all. We would be unsafe in the way you describe your husband. We would be enabling you.
I would recommend looking at some of the support forums for Extra Marital Relationships. 1. you will get support about having an affair. You will be able to have the viewpoint that they are warranted and can be healthy 2. You will begin to read and see the patterns of the affairs out there and see that they have a specific dynamic and elicit a specific psychological response from people in them. That's just not what this forum is.