The question I am struggling with today is whether or not to tell my H that I know they are back together or do I just let it be?
Kinder - Im glad you took the time to post. Sometimes just writing things out is helpful, even if you dont get a single bit of feedback.
In my opinion, it doesnt really matter if he's back with her. If it wasnt her, it would be someone else. So what benefit would you get from confronting him on this? If you had this family event planned, what difference does it make if he's back with her?
I am concerned about your financial state. You mention that you are keeping your daughter's lifestyle the same even without H's income. Are you collecting any kind of support from him? If not, why not?