This happened in the late 90s. I had been married 15 years and sex had gone from from wild and daring to nearly non-existant, as wife made excuses and I quit trying in retaliation - we had two boys aged 8 and 6. I had my own business and worked from home. At that time Hotmail was a place to get free anonymous email account but also you could post personal ads. Thought I was being a player, posted ad saying MWM seeks MWF (married white male/female) for Romance - received exactly two responses: one from Canadian woman who visits area 5-6 times/yr, one from woman living 80 miles away - she is the one I replied to. We corresponded for a few weeks by email and cell phone, we were both on the same wavelength: same ages, same interests, same humor, even lived in same states at times, sometimes within miles of each other. Of course we exchanged face pics, neither believing what we saw - she was beautiful and she thought I was handsome. So we decided to meet for lunch at a deli close to a client of mine, about midway between our homes.
I had been so exited to finally meet that I took 2nd shower of day and fresh clean clothes. She was waiting in her car when I arrived, probably for quick getaway, but we both were relieved that our picture exchanges weren't lies. We went into the deli, got in line and chatted like old friends. We finally ordered, and when I went to pay - HORRORS! - my wallet was in my other pants - I was so embarrassed, but she laughed it off, paid for food, and said next time was my treat - of course I promised, thrilled to know she was looking forward to a next time.
We sat at tiny table and just talked for 1-1/2 to 2 hrs. I walked her to her car, she came in for hug, I came in for smooch and my lips ended up on her neck behind/below her left ear. We talked on phone as we each went home, then probably exchanged a hundred emails the rest of the day - and she told me how much she enjoyed my lips on her neck.
A week later we met again, same general area - only I arrived early, saw her in parking lot, went to approach her but she practically ran to front of restaurant where her husband (I found out later) was waiting and they went in. I didn't understand, was on way home, stopped at McD's when she called, explained, and we met at this shut-down construction sight where we hugged, kissed, kissed passionately and got our juices flowing, and as we were getting ready to go our separate ways, she laughingly said we might end up in room 200 at some sleazy motel.
The next week, as I was getting ready to see her again, she called and asked if I knew a certain large hotel in another city, still about midpoint between us - I said I did and she said to call her from parking lot, which I did and she said come up to room 208 (nearly the same number she joked about).
She was very fashionably dressed and looked absolutely beautiful. I had stopped for a bottle of wine and small box of chocolates, which we enjoyed while lying on bed, talking, kissing, touching, undressing and... she asked if I had brought any condoms, which I hadn't... she said 'oh, well, as much kissing as we had done, it was probably too late anyway', and, being a man caught in the throes of passion, I readily agreed, and we picked up where we left off. I went 'downtown' and she had a couple nice orgasms before I got on top of her and entered her for a nice long period of passionate love-making. I was concerned I might cum early, hence my lengthy oral interlude to make sure she at least got something out of the deal, but I need not have worried: I was Superman that day and she had a couple more argasms before mine arrived.
As we lay side by side, exhausted, sipping wine, being quiet and introspective, I asked if she felt guilty and she replied not at all, and she asked if I did, and surprisingly, I also replied not at all - I thought for sure I would experience at least some guilt, but I didn't - I felt happy and alive!.
And we kissed. And we did it all over again, with the energy of horny teens, and not like the late-forty-year-olds we were.
That was only the beginning of the ten year affair we had while we were both married to others. I will continue this story later, and, spoiler alert: not a happy ending.