Do not offer reconciliation in the immediate wake of infidelity. Make it clear to the WS that the opportunity to reconcile is something that needs to be earned.
Those who take decisive action after Dday and refuse to carry the burden for their WS find out pretty quickly whether they have a spouse worth reconciling with or not.
But those who offer to give it a shot right away without conditions, who do all the work for the WS, and wait around for the WS to "get it"-- ie, 95% of the people on this site, myself included-- find themselves suffering in purgatory indefinitely.
This^^^^1000 times this!
I can not emphazise this enough.
On Dday, I went ABSOLUTLEY APESHIT!!!!
I am talking DEFCON 1.
I started out calm. because I had watched WW for a few days after I discovered the A in silence.
When I confronted her, the look on her face told me she knew she was caught. She tried to lie, which I didn't accept. She then tried the blame shift ("I was lonely", "we were disconnected" and other crappy deflections) then she said the thing that sent me through the roof.
When I found out he was a bum who lived with his grandparents, and I asked....
"why would you mess with someone who could do nothing for you, after the life I have given you?"
She said "material things don't matter".
At that point I started throwing all her material things in Garbage bags and throwing them in her car.
I didn't care what I broke or how it looked. Clothes, Jewelry, makeup, everything I could get my hands on.
I distinctly remember and am still haunted by the visions of my daughters crying, and my granddaughter balled in a corner crying and scared. I remember WW begging, and pleading and saying she was sorry, and it meant nothing.
I was not hearing any of it. I am totally embarrassed by it now. I wish I hadn't done all that. But at the time I was an raging hurricane that would have made Hurricane Katrina look like a spring shower.
HOWEVER....
What ever "fog" she may have been in was IMMEDIATELY shattered. I later found out through my daughter that she immediately called AP and told him "my husband knows, and I never want to hear from you again". He apparently tried to call back and beg her to talk to him and she reiterated what she said with stern and profane language. Told him "no one is worth losing everything, least of all you!"
Point being, there is NO WAY in hell that I was going to stay with her at that moment. I was at the divorce attorney's office two days later.
She begged and pleaded for me to talk to her and eventually a scenario came where I had no choice but to hear her out. Relented from the hard 180 and had more of a soft 180.
I only found SI months later in the struggle...I had no idea what a 180 was, or Trickle Truth. She did give me a month of trickle truth, but I was an obsessive lunatic for checking her story and finding the discrepancies.
My recommendation is that a BS takes a Vibranium level hard line, and go to D immediately.
If that WS can be empathetic and remorseful and work hard and well enough to take you off that hard line, then great. Then AND ONLY THEN you can consider R.
But in the immediate aftermath of Dday, there can be NO grace, NO compassion, NO reprieve for the wayward. They must be forced to make that decision, right then and there and then stand 10 toes down on that decision....and not making a decision, IS a decision for the BS to leave.