Separated from husband last year. He has since moved in with another woman and her children. We do alternate weekends with the children, it was his this weekend, so next weekend should be mine, but with it being Christmas I agreed he can have them from 2 pm on Christmas day until the 27th. He told me tonight when dropping our young children off, that his Dad and partner are doing a buffet next on the 27th for the wider family which my children will be attending. There will be around 18 of them in total. Given the current news and restrictions, I am feeling really frustrated. I am a single Mum, haven't seen some of my family in months following the rules and it is me who needs time off if any of the children have to isolate. Which we have just done a month of! This isn't the first time he has done something like this. Told him I am not comfortable with it and been told it isn't any of my business!