I agree with everyone which I guess makes me a spineless jellyfish.
1. an affair hurts. Deeply. Devastatingly. No difference to the betrayed partner. If the betraying partner is not a sociopath or has a chronic personality disorder eg Diagnosed NPD or SA, they have damaged their own Psyche, their soul, their core. So they hurt deeply too.
2. No get out of jail free card. Abso-bloody-lutely. Sooner or later mirror work has to be done by WS or M is done.
3. The decisions made to have the affair show depression confusion etc. Tick. Character of Betraying partner is shown when they are capable of repair and do the necessary work to make the repairs. This is when I think, the Betrayed spouse can decide whether to have them back in their lives as a safe loving partner no matter what the couples history is or the length of the relationship. Life is too short to live with an unsafe unhealthy partner. It further destroys our own souls as betrayed partners.
4. The confusion is not a typical affair type confusion. Major time slippage and regression to childlike/teen like emotional impulses. Loss of memory of major life events Ummmm huh??
5. They have so many distractions or OWs. Umm maybe they have so many "soulmates" because their souls are shattered into so many pieces, they try to pick up whatever distraction to see if that "IS" a piece they can recognise as part of their identity.
When they were whole and healthy, we were whole and healthy and could see more than just traits that they/we sought in a life partner, we sought a person made up of good bad enchanting annoying. When they break, they choose someone who is also broken because they can only see with that piece of broken soul they hold in their hands at that moment.
When the LBS becomes whole again, we see with our whole souls again, that's when we are able to healthily decide whether to pick up the broken pieces of our WS with them. It would be ideal that they too have done the work to piece themselves back but more often than not, reconciliation or reconnection is tough, really painful because the MLCer comes back with sharp edges of a broken soul.
My 0.02