Hi. I have been in my de facto relationship for 3 years and have 2 children with him, plus I have 2 from my previous relationship. I don't want to be in the relationship anymore as I am really unhappy and he can be extremely nasty to the children. I need to move back home. I live 4 hours away from my family. He's not physically abusive but he is mentally. He's told me if I leave, he will either kill me or himself. I don't want that to happen with a separation from him. I am really scared, what can I do?