"She admitted it and continued to say they were just friends (...) she doesn't like him like that and he is just a friend who is also going through a divorce."

When I went through my first divorce, one of the counselors I saw recommended I read this book: https://www.amazon.com/Not-Just-Frie...6376186&sr=8-1

It made me realize that sometimes, some people do not intend to hurt someone else but it happens. It was a tough pill to swallow.

My soon to be ex-husband is also leaving the house at odd times, without telling me where he is going. It takes an act of God not to say something. I get it. If it were not because I am financially liable for the house, I would leave just to get away.

The emotions you are going through are normal. You are not alone. Some days are harder/easier than others.