The question is not if she wants a second chance. It's "Do I want to give it to her?"
It's quotes like this why you are so far ahead of the game.
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You are a very pragmatic guy it seems. Some folks just can't live with infidelity - the mind movies, the "what would have happened if I didn't catch her", what was big for me was "how would have she gotten ready for him this morning if I hadn't caught her, what would be going through her mind", I finally accepted that I believed her that it wasn't about me - and unltimately that's what hurt. Everything I did was measured as part of us as a team, and I ultimately decided that I deserved a teammate.
That's just my view, and each of our posts are going to be colored by our core beliefs. They're going to be influenced by our experiences.
I also believe in reconciliation, but in certain circumstances. I can see reconciliation more for a ONS or a tryst without feelings. To me, the EA is much more than a PA. Then there are folks where the PA is the worst part. You have both a PA and a EA on your hands.
A relationship like this may have received it's killing blow.
When you get a Christmas present, you'll be like "I wonder what she would have gotten for him. I wonder if she would have bought it at the same place. I wonder whose she would have put more thought into".
This is simply my experience where I was at your stage. That "What Ifs" and "Whys" dominated my life. It was the fucking lowest I've ever been. I have used the analogy here before, but the only stupid way that I can use to describe it is that I felt like I had a cloud of bees swarming my head and everything added bees to the cloud, and moving my head would always result in getting stung. It fucking sucked.
I began to resent her. The fact that I still loved her made it all the worse. I wished with all of my soul that I could hate her, but I couldn't.
We had a mini 2nd d-day that I still don't know if it was, but it was my final trigger. I said fuck it, I don't even care. Didn't care about the house, didn't care if she got every cent that I owned. I left. I drank a ton. I poured myself into work (literally). We separated and I slept around a lot (girls in their 20s love guys in their 30s I found out). That was unfillinging and I felt dirty, I suppose there was some revenge and resentment in there, although we were apart by this point. I still clearly had some healing to do.
I swore off women altogether. At the time I said that it was for good. And it goes to show you how fucked up life is that a few days later my now-fallow match.com account got a hit, and it was from a red head with little doe eyes. They say that love doesn't exist at first site, maybe it was infatuation, but it's fucked up that the past two years kind of all of a sudden disappeared. My life stopped being "what should have I done" or "how can I deal with this shit life" to "holy shit I can't wait until she texts me again".
I don't know where this story came from. I guess I want to illustrate that my "story" doesn't have any more correct answers than anyone else's. This one guy's opinions are colored by who I am, and I can only hope that typing unfiltered to you will give you insight into how I handled things... I feel like an asshole being "you should do this!" because frankly I don't feel like an expert about anything when it comes to infidelity.
All I can do is tell you how I treaded water, how I handled the waves and why I never want to go back into that cold shitty water again. I wouldn't wish this onto my worst enemy, and you come off as a very sympathetic figure, which is why folks here are jumping through hoops to give you everything that they have for you.