AITAH for not wanting to give my room to my mother's internet boyfriend?

Hi all. My mother has been dating a man from another country for the past two years. They're online dating and have met each other in person around 4 times. She's planning to have him move in & I will have to give up my room to give it to them. My apartment has two rooms, me (23) and my sister (15) have our own rooms and my mother sleeps in the living room.

My mother is not good at picking partners. The majority of her boyfriends have been physically abusive and/or perverts. She's had boyfriends knock her teeth out. I do not trust this man, but theres nothing I can do about him moving in considering my mother will say that my viewpoint is irrational and only because of my trauma. She frequently accuses me of hating all men because of my childhood experiences, which is not true. I have never said a single male hating thing even jokingly to her.

I will admit that I am a highly dysfunctional adult. I do not have a job, but I did graduate university a year ago. Lots of the worst type of abuse in my childhood has made me agoraphobic. I am currently in therapy and I have recently begun meds.

She states that my opinion does not matter since I do not have a job. AITAH?