@AmIGoingMadTheseDays unfortunately I was proved right.
I was mostly blind to what was going on and hind sight is a horrible thing when it makes you feel like an idiot.
I so hope that you are proven beyond doubt to be incorrect.
The things that set my radar off were.
Unusual anger towards me at seemingly minor things or even at events way outside my control.
Distancing emotionally and physically.
Our sex life dropped away and though there was never any pressure from me. Any suggestion of it was met with she was struggling with confidence and that has taken a toll on her drive.
Her socialising became more frequent. I would never and have never said not to socialise. I even encouraged it thinking it would help her mood. Plus I worked a few evenings a week doing something I absolutly love doing. So it was good for her to get out too.
There was overly detailed descriptions of thise nights out especially when it was with work colleagues.
It had been going on for months before I became suspicious. At that point it was just out with other people from work and sneaking off to kiss or meeting at lunch for coffees.
Then came the further proof. Her stopping getting changed anywhere near me.
The worst moment like that was on holiday with the kids on a dream holiday. We had a hotel booked in between locations for just one night. It had two rooms and my wife and daughter took one and I took the other with our son. My wife called me to say she was stuck in the bath and needed help. It was super slippery and she had injured her leg a bit so couldn't get her feet under her to get out.
I came in and she covered herself up. I helped her out and she was holding her hands and arms across herself and turning sideways as if I were a stranger and not her husband and partner of 20 years. The look she gave me was like I was some sort of pervert stranger who didn't leave straight away. She had never looked at me like that and I just sank inside. The whole holiday I felt like I was a spare part to her shed rather just went away.
Turns out a week before we went was the first time she had slept with her affair partner.
A few days after we got back I found proof. Used pregnancy tests. Two of them and then the next day a third appeared. We hadn't had sex for months at that point so I knew.
I spiraled a lot and started writing my thoughts down to help me and it worked.
When confronted with the proof. And I was not hostile at all. I just stated what I thought and what I had found. It was denied. I asked again the next night. And again I was told they were old tests. They weren't.
A week later she had an emergency and needed to be away for a night. I knew that wasn't the case. And based on those detailed stories and some social media detective work I had a good idea who.
Later that night my phone rang and it was her. With him. I could hear them both together.
Turn out he wanted her to leave me and forced the situation by calling her emergency contact on her phone. Me. So I could hear them. He admited to this later on.
She came home. We talked until the sun came up. She was sorry for being caught but the words she said didnt feel like she took the blame for what she had done.
We came within a hairs breath of it ending and I was happy for that to happen.
It was actually quite nice during that time. She wasn't anywhere near as angry (turned out it was her guilt coming out in anger towards me. If i'm the bad guy then she isnt doing anything wrong) plus the stress of the secret gone. She was actually nice to be arround again. But I was still happy for it to end. I didnt want it to. I actually wanted us to try and work it out but could not see how.
Then we had a moment that just hit her as to what she had thrown away. I always try to make her laugh. Especially at my expense. And I randomly did just that by text.
She broke down and everything changed. She shared everything. Took full blame for everything and talked about how to make it up and how to work at getting us back.
Now quite a while later we are back and are both very happy. I still have off days where it hits me hard. But we can talk about it and she understands and helps or gives me space.
The one thing we haven't got back yet is her trust in my trust for her. By that I mean she is avoiding social events where i'm not involved. I know nothing will happen and she knows that too. Its just she doesnt want me worrying and feeling like that so she avoids them.
Sorry that got a bit long there.