You can’t help him. He needs more help than you can provide. He has hurt you. He’s dangerous. If you do decide to leave him, which would be in your best interest, you should go to a domestic violence shelter. Domestic violence shelters are purposefully hidden in the community so that perpetrators can’t find their victims. Hiding out in the usual places is a bad idea. Domestic violence shelters can keep you safe. The staff can advise you about ending this relationship safely.
You should also consider going to the police and filing an order of protection. Orders of protection make it easier for the police to arrest a perpetrator threatening violence. Check the laws in your state to learn more about orders of protection.
If you think that my response is alarmist, then you would be wrong. This is a dangerous situation. He has hurt you before and he is clearly unstable. There is nothing you can do to help him nor should you try. Your main priority should be keeping yourself and your family safe. Domestic violence professionals can help you achieve that goal. Use their expertise and do so immediately. Please take care.
Dr. Kristina Randle