Thanks everyone for your support and comments. Last night I left after the kids were going to be and just said I was going out. She didn't ask anything and she never has in the last 3 months of me going out 4-5 times a week. I kept gym cloths in my car so I was always dressed nice when I left and returned. Never once did she ask me anything.
This morning started out great, had a work event that was awesome fun and I forgot all my worries for a few hours. Then a strange thing happened, it all just came rushing back after lunch and took me by surprise. I felt lower than I had felt in weeks. Then I got a call from a friend that I used to work with that also knows my WW. He knew we were having issues but not the extent of them. He wanted to let me know him and his wife saw my WW and another man last week having a "romantic date". He wasn't sure to tell me until he brought it up with another friend that I am much closer with and learned about the divorce filing. That was just a punch in the gut but nothing I didn't already know.
Now the relish on top of this S*#T Sandwich. She lets me know this afternoon that he is selling his house and moving out here as soon as that's done.