I used to have visions of walking up to OW when she was coming back from lunch and smashing a cream pie in her face.... of course I'd like to do something more drastic, but at least the pie would be less likely to put me in jail and she'd look quite attractive for the day (I'd make sure to do it on a day when she had an important meeting she couldn't miss!).
>>My H ALWAYS talked about his friend Cheryl from work. He NEVER talked about OW<<
That's typical. Affairs begin and flourish in secrecy. Even if he had mentioned OW in the beginning, once the relationship felt important to him, he would have stopped talking about her. Unfortunately, it's the people they don't talk about, and the closeness in that relationship, that you have to worry more about.
By the way, what are your work schedules? How much time do you and your husband spend together?
There is no arriving, ever. It is all a continual becoming.