While he was visiting on his visa, the child's father and I met and started hanging out and I got pregnant. The father does want to be involved in the child's life and wants the child to also visit and live when him in Australia half of the time. I know it is important for a child to have a father, but I feel like 6 months out of the year is way too long to be apart from my child, and I have a fear that the child won't be returned to me when his visits are over. Is there any way to ensure this won't happen and can he get the child a citizenship without my permission?