Some random thoughts...
I start with the belief that I can't predict the future beyond the next few minutes, at most. I add to that the beliefs that I don't know your W or you and that I don't know more about what's going on with you than you disclose in your posts.
I never felt insecure, but for the first time in my life I’m questioning myself. I’m wondering where I’ve fallen short as a man.
That's almost universal; women go through something similar.
The fact is, however, that your W cheated for her own reasons. She didn't cheat because of issues with you or your relationship. She cheated as a (monumentally ineffective) way of dealing with her own issues.
You're the same guy today that you were a week ago, with the same capabilities. You've received a terrible blow. It's natural to question yourself. But you can recover.
Lusting after other people in your heart seems to be pretty normal. I'm in the camp that says thoughts alone can't be criminal. Right now I'm watching a TV series in which the 15 year old Liu Yifei plays a big part, and she knocks me out. I'm 5 times her age, but my biology is my biology. I'm not going to beat myself up for it. Of course, I'm not trying to get in touch with her, either.
Actions count, not thoughts or feelings.
*****
Because your W cheated for her own reasons, working on your M is not directly to the point. Your W - not your M - failed.
*****
Recovering from being betrayed is a marathon, not a sprint. You've just started. Gently, it will probably get worse before it gets better. Think some months of getting worse and then a slow process of feeling better. Think 2-5 years to recover. R(econciliation) probably takes longer, because it's more work than just healing yourself.
*****
The data I've seen is that most Ms hit by infidelity don't break up, but I haven't seen data that's statistically valid.
Much more important, a large number of people R. A large number of people D. Therefore, you have options, all other things being equal.
*****
Do you really want R? Do you really want to spend the rest of your life with your W, knowing she's been so effed up?
IMO, recovering from being betrayed starts with figuring out what you want. If you already know, you're ahead of the game.
*****
If you want R, you need to observe your WS, because R takes 2.
You heal you.
Your WS heals herself.
Together you heal/(re)build your M.
If your W is not committed to doing the hard work, you cannot R. You can r(ugsweep), but you can't R(econcile) unless both of you do a lot of work.
I'm pretty uncertain about your W's quality as a candidate for R.
For example, in general, trickle truth is very negative for R. OTOH, there's a LOT of info your W has to get out into the open, so maybe a week or so or more info isn't a big indicator.
On yet another hand, not talking about all the red flags you noticed is in itself a red flag....
*****
Hallmarks of a good candidate for R are 1) no more lies, even though it will take a long time for you to recognize she's stopped lying, and 2) taking responsibility for her actions without blameshifting, minimizing, gaslighting, and with a diminishing amount of defensiveness.
A couple of examples:
When I asked the right question, my W said, 'I've been having sex with _____.' She didn;t start with, 'I'm being blackmailed,' which was true.
When answering my question about the start of sex, my W's answer was something like, 'She was doing ____, and I decided to ____.'
*****
If your W is willing to do the work necessary to change from betrayer to good partner, she can become a good partner. But is she willing? Will she do the work?
Personally, I think it's too early to tell.
*****
I recommend figuring out some requirements for R. Standard reqs include:
NC - no contact with ap; if ap initiates contact, report to BS and together decide how to respond
Honesty - WS answers BS's questions when they're asked, although sometimes a break is necessary, sometimes an answer is best deferred to MC session, etc., no more lies.
Transparency - BS has passwords to e-mail, voice-mail, phones, etc.; WS keeps BS informed of whereabouts, activities, and companions at all times; a corollary is closing any accounts on websites that encourage cheating.
IC for WS - to change the thoughts and feelings that supported the A, with signed release that enables C to talk with BS about WS's goals and progress (so the BS can make sure WS's IC isn't being lied to).
IC for BS - for support
MC - to help communications between the partners
Some (Most?) people have individual requirements - my W must arrange dates for us on a weekly basis and must initiate sex sometimes.
*****
Above all, know that you can heal from this, whether you D or R. You can survive and thrive.
[This message edited by sisoon at 12:38 PM, November 1st (Sunday)]