Alright this situation is a bit confusing. My ex husband and his wife are polyamorous. Fine whatever. No judgement on that part. They no longer live together and his wife lives with her boyfriend and his son. I have never met the boyfriend. But every weekend my ex husband drops his son (daughter’s half brother), and my daughter off at the boyfriend’s/his wife’s house. Previously we had an agreement that before my daughter was introduced to any of their partners I would get to meet them so that I could feel comfortable with my daughter being around them. This hasn’t happened and I am becoming increasingly frustrated and anxious. Because my ex is doing this literally every single weekend that my daughter is there. I don’t know what to do or if there is anything I can do about this. I have tried to talk to either of them about this and nothing has changed. It has been months but I am at a loss.