If you want to know if your W is being unfaithful then hire a PI. If you don't then start living your life for you and your kids and eventually it will play out.
If you want honesty then I would say it's not looking good for you right now. You have been separated for over a year and still have not learned to not pursue and control your emotions.
You have zero control in the outcome and I can tell for you is a bitter pill to swallow.
I am sorry but you are your own worst enemy my friend.
