My ex wife cheated on me and I experienced most of the things the OP listed. Its a solid list. She played her game for at least 6months before I started suspecting something.
Post divorce, I had the opportunity to date a married woman for a brief time. I did it just so I could experience the whole cheating thing from another perspective and further educate myself. We would sit there in her car while she called up her husband making up lies on why she wasn't going to be home on time while I had my fingers up her pu$$y. When it all ended, the husband had suspected it and she came clean and it turned out that I wasn't the only guy she fuhked outside of her marriage. I believe he was cheating as well. At one point he asked for a 3some with him, his wife, and me. I never took them up on that offer.
If you are a married guy please take this to heart:
It never fails when I go out dancing, some attractive married woman will show me signs of interest. She will only sheepishly admit she is married when I inquire. Every time, she will try to be very obscure in her admission. Almost always, her man is standing just feet away. He is usually oblivious to whats going on. He is also afraid to take her out and dance. At one point in my life I was that guy too, but after I got divorced and learned how to dance I started to understand how easy it is to build a connection with a woman on the dance floor. Its total foreplay for them. When you get these married girls on the dance floor, their eyes tell the story of them being unhappy, bored, unsatisfied, wanting a man to take the lead, and craving those tingles between their legs. The girl I danced with the other night ended up with glossed over doe eyes by the time I was done with her. And once I was, I had a talk with the husband, explaining to him he needed to dance with his girl.....he was too much of a blue pill swallower to get the point I was trying to make and started to get upset so I stopped. The guy refused to get out of his comfort zone like a man should be doing. Some day he will lose that girl.....rightfully so! Leave the hot girls to the guys that know what they are doing.