This is one opinion that I will NEVER make my own. I find men & women to be incredibly different from each other.
I find men and other men incredibly different from each other, and I also find women and other women incredibly different from each other. What's more, I often find men who don't have a goddam lick of logic and men who's every act is based on some emotion (even if well hidden). And these are not exceptions btw.
I haven't read the whole thread, but I mostly agree with your advice to Descender, in your first post anyway. This relationship is not solvable, certainly not with he and she in the states of growth that each is in respectively. She may indeed look back someday and think "I could have handled that much better, this was painfully ugly and didn't have to be". She is excercising her freedom, her power, like a bully (and bullies are always compensating for inner weakness), and descender is acting weak and being bullied (I've been there). It doesn't mean he is weak in any other area of life, and then again, she may end up hating herself for acting this way someday. But neither person will grow, at all, if they stay together.
Descender, sorry man, I do know what you're feeling, and it's incredibly painful. You never intended for this to be a practice run. But someday, and I know you won't believe me now, you will find silver linings in this, and you will be happier than you've been in a long time, even before your wife brought this particular circus to town. I really think the lesson to learn is that a marriage has to be so open, so free, that each partner is totally aware that the other can leave at any time. That way, the truth (and this is the truth) is out in the open. As witnesses, we knew people got divorced, but we somehow didn't even see that as an option for ourselves. The simple truth is that it is an option, and it's better to have a relationship with eyes wide open.
I really don't think there are very many 20 something women alive in the year 2004, in western countries, who can be at peace with having only had sex with one man. Someday that man is going to piss her off, and the forbidden fruit is only mildly forbidden nowadays, readily available for most any woman, and by now she's figured out that curiosity isn't going to kill her kitty at all, and besides, a little danger gets the blood flowing. Hark, what signs mark yon intersection? Curiousity, Libido, and Excuse convergeth. And you my friend, were blindsided.
We just weren't prepared for reality by our parents and their religion.