My ex had told me his new partner was moving in with him and my 5yr old DD (we are 50/50) and I was fine with that (not met the GF yet as have had a LOT of traumatic events in the last two years and it not the right time) my Mum recently passed away, about two months ago and I picked up DD from school last Monday and was told the GF had already moved in and he hadn’t told me. I’m furious. I don’t know how long she’s been there for but his response was ‘Well now you know’