Been informed by my kid's father that he's leaving Australia and going to live in the UK. He currently has the kids every other weekend and school holidays ( custody of children). He didn't talk with me about the decision, just sold it to the kids that they could go for holidays, told them first then told me via an email. Didn't ask me if it was ok for me to take them full time (though obviously I love my children so I want them, but there was no consultation) So can he just go without discussing or agreeing on anything with me? He can just say he'll be gone in 6 months and that's that?