It sounds like you're in a very difficult situation and need to take some decisive action to protect yourself and your safety. It is important to remember that you are not responsible for his reaction or his behaviour and that you are not obligated to stay in a situation that is making you feel unsafe.
The first step should be to make sure you are in a safe environment and that you have a plan. Do you have a safe place to go? Is there someone you can stay with or is there a shelter you can access if necessary?
Once you are in a safe place, it is important to take steps to protect yourself from further contact with this person. You should consider changing your phone number, blocking them on any social media accounts, and avoiding any places you think they may be.
It would also be helpful to reach out to a mental health professional for support and resources. A therapist can help you work through any feelings of guilt, fear, or other difficult emotions that may arise from this situation.
Finally, if you are in an immediate danger, contact the police. It is important for you to take action and protect yourself.