I'm so sorry @mumofpickles
I am 4 weeks into finding out about mine's affair. 12 years together and 2 primary aged children. I only found out because her Dh found out and rang me. He was with her in a hotel at the time. I had no idea -well I thought something was off as he left to go but thought I was being unfair and I was upset with myself for questioning him, when I had no reason to, so feel like a complete mug.
It's devastating- I think other people have summed it up well, that I will know I've tried to make this work. Perhaps in the process I will start to detach or some days I actually feel quite positive for the future.
The reality has set in now, that this is what it's going to be like for a long time and it does feel overwhelming.
It is completely devastating- I'm in the same boat as now somehow responsible for making the decision that will impact on our whole family. I know it was him that chose to do it but he's now a crying mess because he's been caught and promising the earth - and it's down to me to blow our kids worlds apart (or not). They have no idea that anything is wrong - it's not like they live in an unhappy house, listening to arguments - we've always got on so well. It is so very very unfair.
The GP has referred me for some therapy and we are going to go to relate but I have no idea how all this will end.
Good luck OP, I found reading books helpful. 'Not just friends' by Shirley Glass - I saw it on here. To get my own thoughts sorted.
I'm so sorry you're in this position too.