My ex husband has agreed to allow me to have full custody of our 2 year old son and unborn child. He has even let us move interstate. However there is nothing in writing and I was wondering should there be? What's to stop him from turning around and changing his mind and if he does where does that leave me and my children?
He is not genetically the children's father as we used donor sperm through IVF so I don't know if that would come into play at all.
Should I get something legally written up? How much will it cost and what's the process etc.?