I'm wondering how to find posts from anyone who has done 2 Rs. Is that even possible? What does it look like? I feel like I need to "try it on" in my head to see if it fits. Doesn't change the discomfort for feeling like a schmuck for even thinking of R.
If you read my profile, yeah, I had some experience about ten years before I caught my WH out in a Craigslist binge. IME, it felt very much like real R the first time we went through it. I bought into all the typical pop-psy of "unmet needs" which was, and still is, popular with therapists. The problem is that marriages don't cheat. People do. So, while we were super busy making sure the marital problems were corrected, we failed to see the need for my WH to make the internal corrections he needed to make.
Once you reject the "unmet needs" fallacy and start looking at cheating and lying as a character problem, you can't look at it any other way. It's so easy to fall under the spell of a WS who is desperately trying to save his home deal. The tears and snot-bubbled promises to change look real because they are real... at the moment. Only time and hard work will tell if he really means it. Most don't, at least not at first, because underlying it all they don't really see the need for change.
In the cheater's actual values system (not the one they claim in public), there IS a legitimate reason why a person might cheat, and this is what has to change. Your WH is capable of saying 'yes' to betrayal, 'yes' to adultery, 'yes' to the lies and perfidy which goes with those things. No matter what he has told himself, his personal values and the boundaries which surround those values, did not reflect fidelity, honesty, loyalty, or care. He is demonstrably NOT the person he has portrayed himself to be, and until he actually is that person, he is not worthy of partnership with someone like you who does value those qualities.
We protect what we value. If your WH valued fidelity, he would have been faithful. His personal boundaries would have sprung up around that belief like a fence, and his actions would have been determined by those boundaries. It's not even a big, well-planned thing. It happens organically. You value fidelity, so you don't put yourself in situations where you're on the slippery slope. Your hobby friend hits on you, you shut it down and only talk about hobby, and if that doesn't work, you stop talking to that person. It's reflex, a response to a boundary you didn't even know you had until it was tested.
I think, in a lot of cases, WS's aren't ready to admit that they aren't who they thought they were, that their stated values aren't their actual values, that their boundaries are weak, permeable, maybe even non-existent. They look to blame the relationship because it's easier than facing the truth about their own character. Even when they're prostrate on the floor and condemning themselves in fits of weeping and apologies, you can't tell for sure that they're really going to accept this hard truth about themselves. It's not until they pull out all the stops in self-examination and are doing the very difficult, very humbling, work that they are likely to achieve meaningful and lasting change. It's not as simple as saying, "yeah, I get it now". The WS needs to understand how they got that way and then be willing to tackle whatever demons they've carried around that made it okay.
Anyway, long post shorter, I do believe in second R. I think the trick though is knowing what you need to see from the WS and then settling for nothing less. It can take time to achieve and it's not a perfect process, but once you understand that it's about character, values, and boundaries, you're in a better position to insist on real change.