Should I initiate R talk?

[Arsene]

Thanks MrBond for putting things in perspective. Unfortunately, a new event just took place and it also puts things in a different light for me.

Now I need advice. My D8 just told me that her mom picked her up from school with OM. Now last week (or ten days ago), me and W had agreed that we would not expose D8 to our romantic involvements yet D8 seemed quite familiar with OM's name and surname so I asked her if she often saw him and she said sometimes.

What do I do with that. I don't want D8 to see her mom's boyfriend. Not now anyway. Maybe once we are divorced and she has been with him for at least a year, but not while we are in this situation. What can I do about it? What should I do? Should I try to gently remind her of the boundaries we'd set? Should I forbid her from seeing D8? Or taking her out?
I don't know anymore. why is she lying like that? Why is she even doing that? doesn't she realise the pain and anguish she is causing and the possible impact on D8?

Why is it that every time I think I'm getting a hang on things she changes the plan.

I'm getting sick of this. I don't know if I can manage this much longer. Maybe I should just leave this country with D8. Especially so that I heard from lawyer yesterday that the law here state that the child always stays with the mother, especially if the father is expat. I don't want to lose my D8 because of this. What can I do now?