You know, when the affair is out in the open like his is, AND you still live together, poking a little fun at it is not off limits, I think. It shows your spouse you have a sense of humor and are strong. It's actually a good way to toss a few truth darts.
Your H is not going anywhere, RL. Continue to take charge of your happiness and your home. Maybe do something new. Does H want to join you for the ride? His choice.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl