You had one more question, regarding those of use who have repaired their marriages.
Yes, we did that in a fashion, frankly, the marriage was irreparably damaged, but we patched together as best it can be, it is like a three legged dog, it can get around, but certainly can't run like it used to.
That took 4 years of MC, my FWS was in IC for nearly 10 years, still is occasionally, and went to AA, stopped drinking (and admitted how much she was drinking in secret), stopped smoking pot in secret (from me only apparently), and had to drop some friends of her bad habits (but they were not friends of the marriage).
My FWS, she had to GROW THE FUCK UP and do so quickly, own her shit, and shovel it, and stop blaming me for everything that wasn't perfect.
She still doesn't quite get it. Probably never will, but she is still learning, and part of it has been unlearning terrible dysfunctional behaviors she learned growing up, getting mental health care that was competent, and being open about her issues.
Sounds terrible, looks terrible, when typed, but it was what reality was.
My FWS had spent most of her adult life, much of it with me, hiding things, lying, and avoiding responsibility, and the affair was just part of this, she was still acting like a teenager in secret, while presenting to the general world as an responsible adult, involved and competent parent, and loving spouse, but there was a dark side, all the secrets she had kept, etc.
Reality is, you don't really know who you married, you thought you did, but you married someone who could cheat on your for several months, lie to your face, and endanger the entire family. Just like I did. Now, you have to find out the reality of your situation, and figure out if the WS will put in the work.
It will not be a smooth road.
Read a lot here, learn a lot, learn how to protect yourself, learn how to protect your family. Remember, we are all experts, but only in our own marriages.