Advice needed

I’m new to poly but pretty open so when I met a girl that was poly I was fine. I met their partner she seemed nice wanted a kitchen table poly. Okay I can do that. After a few months lesbians do what we do and I uhaul across states to be with her and her partner. Now everything has went to shit. The partner hates me says she will throw me out on the street or I can go to a homeless shelter ( mind you it cost 2k to go cross country and I pay rent.) Before I moved I asked them BOTH if this was okay and what they wanted they said yes.

Now she says seeing me disgust her ( I’m not dating her) I keep out of sight. I learned she abuses my partner. Screams, yells, gaslights, hits her tried to SA her, calls me ever disgusting name you can think of behind my back but she screams so loud I know what she has called me and it’s effected my self-esteem.

She Said she changed her mind. This is the same person that is still seeing people and dating but me and her partner can’t date. First it was she just need move to my own space which I can’t at the moment, to I don’t want you seeing her at all.

Called the cop on her for locking my partner in a room and threatening to lie to the cops to get her arrested.

Her demands are insane, and I’m starting to notice that any time it’s my schedule time with my partner. She has to have someone make her dinner, do stuff for her, or just throw a fit…ect so that I feel like I’m just a bed partner.

I don’t know what to do and can’t really find a way out at the moment. More than anything I feel like a dirty secret. So no I don’t do things like post photos with her, I don’t hold her hand most of the time.

Because I have gotten screamed at by the other girl I keep PDA pretty low to none unless we are alone.

But even alone she is texting her up a storm.

I would never have moved if this is what it was going to be life. I checked a dozen of time with both of them that it was okay.

I Just feel lost.

Help