My husband and I have been pretty estranged for the past year. For the past few months, we had made plans for him to move out on November 1st, but he is still here and we are trying to work on making improvements. A few months ago, he had planned a work trip for this week. The night before he left, I found out this work trip is only with his female boss, and they had planned it together. They coordinated flights, and he rented a car for them both. Immediately after leaving the airport, they went thrift shopping together for several hours and didn't attend the first day of the conference. I have let him know how uncomfortable I am with this situation, especially given that I have felt she has had feelings for him for a while. He keeps dismissing me with anger, and telling me "it's all in your head" and that I am making things up. I called today and they were out to lunch together, not at the conference. I later found out that she is not married, like she said she is. I keep getting more upset with the situation and everything continues to get worse. Every honest fear I express to him is turned against me or dismissed. What do you think of his behavior? How can I speak to him in a way to get him to acknowledge the optics of the situation and my feelings? How would you react?