this ranges from calmer monologues to screaming fits of i hate you BUT as soon as i agree that yes it would be better if we took some time apart or say that I want to split of he freaks out and loses it out of control again.
He's testing you and Lundy Bancrofts famous quote "they don't have a problem with anger...they have a problem with YOUR anger". They get to rage, wallow in self pity....anything. But not you(us).
They do not want to lose their emotional punching bag (us). It sounds like you have a narc/disordered personality...consider reading and watching youtube - Sam Vaknin and Narcsite.com. They give advice on dealing with the escape, how the Narc thinks.
It seriously helped me formulate a plan with my husband and predict his behavior.
I should tell my family.. My dad knows a little bit. I know as soon as i tell them he would be here in an instant to take we away (well not an instant because he is a military contractor overseas lol) but I can't even imagine how that would go and I'm scared he would try to hurt anyone who came to take me away. I leave the house for work so could slip out then but still have to confront the fact of telling him at some point.
Tell your Dad. Getting "normal" people into the situation blows the fog away and makes things clearer. Share your safety concerns for everyone's sake. Don't let your fear of him hurting people keep you hostage...he's doing it purposefully. That is what police are for, restraining orders and more.
Mine threatened me with what he would do if I left....and did none of it. This was years of very specific threats.
Why? Exposure!! I didn't have a friend or family in the world so I told a lawyer, local DV and documented etc. I let him know immediately people and agencies KNEW. I even told him that if anything happened to me..so be it but they would be coming for HIM.
Boy did his behavior change when he realized people knew. Still a horrible jerk but with people "watching us"....the most decent he had been to me in years.
I am not doubting your concerns and safety is critical, if you need to just slip away, so be it. There is a threat assessment test you can use. It can give you some perspective on your threat level;
Mosaic Threat Assessment Systems
Best, Whirlwind