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Your situation sounds like a repeat of mine 2 years ago. You say you would like to be talked up, from my experience you have 2 phases to go through. The first is the trying to save your marriage phase, which you may succeed in - I didn't. You then get into the move on with your life phase. Which at the moment despite having been made redundant I feel I am succeeding in, so I do believe this hope!
My wife's affair was not cyber but it resulted in her claiming she loved this guy after a very short period. She also changed drastically. This all happened right after my 40th birthday and I firmly believe it was a mid life crisis for her. Her view of events got so distorted, everything was my fault. It was a horrible time.
I spent 9 months trying to persuade her to give him up. In hindsight it was a total waste of time. She could conjure up so many things that she said she hated about our 20+ years together, she ignored all the good things we had, she could only talk in glowing terms about her new man as he made her laugh.....So much for valuing commitment, sacrifice for your family, etc etc!
In the end she moved out and rented a place so she could 'be me'. Her relationship with the guy continued. I stayed in the
marital home, carried on working, looked after the kids 2/3 of the time, and paid her
child maintenance - yes I was stupid!!
Now just over a year later, I have looked long and hard back at my marriage and realised it was not as good as I thought. I have also looked honestly at my ex and realised she was not a nice person and that I made a lot of allowances for her. I believe marriage is about compromise so I was happy to do that at the time. I have met a new partner, who makes me very happy and I feel my life is much better.
I do still feel down sometimes, as I have been made redundant and the marital house is now on the market, but I know that the redundancy is not connected with my divorce and is also the chance of a new start too!
All the best
S