My wife and I have been married for 22 years and up until 6 months ago I never had reason to question her loyalty. I found a document on our computer that was a journal (she did not mean to have it on our pc) and previously while using her laptop I found this document and it was locked and she was upset that I had found it. Long story short I opened the same doc on our PC and it was very standard journal entries (May 06) until the last entry. It stated "it is getting late and I am tired, thoughts of him are fading slowly but surely, it all seems so surreal".
To say the least I was shocked and called her at work to confront her. Her answer was it must be "John Doe", a male co worker (work friend) at a previous job, three years prior. They were on a team of people (six or so, mixed sex) that got along very well and I met all of them. That night and ever sense she has no explanation, except a poor choice of words ( "I chose my words poorly, you know how I can't express myself or do not think of others feelings"

. My wife is a professional as I, so I am having a hard time believing that.
I consider our marriage sound however, the last few years she has drifted due to our time spent with our kids, I traveled at work, etc... I knew we needed to devote more time to each other but nothing earth shattering. We both opening talked about taking care of ourselves and spending more quality time with each other. I have never cheated on my wife so this is all new to me. I confronted "John Doe" by phone and in person and he denies any affair or anything close to that ( no physical touching). I did discover that the day before my wife left the job where they worked together "Doe" told her they could never work together again because he was starting to have feelings for her. I confronted Doe with this and of course he apologized very fast and over and over.
My wife has felt really bad about this since I found out however; she has never changed her story. After looking over some of the hints given for cheating spouses, she fit some of the signs of cheating. Am I being overly cautious or overreacting? Could there be another player in this story that is being withheld. John Doe is very plain and just geeky. Please help me out with your thoughts. I have been devastated by this all. Since this time our marriage has jumped back on track as it had always been but, I can't help but look over my shoulder wonder who this is about and how will I know? Thanks James