For me, as a man, I didn't need to know all they did, I have a good imagination as my WW is pretty hot for her age, she would wake up a dead stiff.... I just wanted to know when it started, why, how long the affair(s) lasted, and especially how did she managed to pull this off, for over 1.5 year and I never noticed anything.
I had enough graphical images in my mind, and all the other daemons that kept me awake at night, a few times 2 days without sleeping, but mostly only 2 or 3 hours sleep a night. This hellish situation lasted for over 2 weeks after she admitted to having slept with another man.
Things are better now, I can sleep a good night sleep on most night. I have the occasional 2-3 hours of sleep, but few and far in between now. Getting good sleep also helps a LOT in the recovery/salvage process I believe.