Is it normal what do i do about this

I live in a care facility. There's a man that came to live there about 1yr ago, and he is, shall we say, not like the others. He insults me. He believes he has a whole harem of women, but nobody ever visits, male or female, and the only woman he's ever been seen with for any length of time is me. All the staff ask me where he is. He threatens to cook and eat me. I love it. I don't know what you'd call it. Horror roleplay??

When he does this, my muscles loosen, like a piece of meat in a slow cooker and all my anxiety goes. All the feeling drains from my legs, which I love. I've groaned in pleasure and relief reading our messages because the pain goes. He knows that and finds it either funny or annoying, depending on what mood he's in.

Part of my disability is that my muscles are stiff so as annoying as he might be it's better to keep talking to him than not, and also because most of the other inmates are boring. This has been a (splattered all over the walls) pattern since I started to live in group homes.

What I find worrying is not my reaction to the roleplay itself, but what happens when he stops doing it. I'm not “right”. I'm too quiet, I snap instead of speaking, my stomach hurts, I feel very sick. I was shaking and sweating and shivering.
His moods are up and down like a whore's drawers, he either sends me a ton of creepy, fake-threatening messages or blocks me and/or doesn't speak–- and my aunty says I should cut him off, but sadly we have to live together.

I would be very grateful if someone would do said roleplay with me until he comes to his senses.