As the title says. I've been in this relationship a year and 3 months. It all started out great and was kitchen table. I liked my meta, my meta liked me and we all got along. At around 9 months in I moved into my partner's house to live with them. Immediately I started noticing some odd behavour from the meta. Insulting my partner, forcing them into bad situations, the meta always choose other partners over my partner to extremes, making partner cry a lot, the meta being in bad moods and giving silent treatments for minor things, the meta constantly complaining about my partner, the meta being mean to me or saying rude things behind my back. That sort of things. It made the house environment just bad. I have health issue and have been going through a few more major health scares that are very serious but not too serious and the feeling around was very stressful and made getting better hard. My partner was not willing to address such things because he is a passive person and very afraid of any arguements. I started saying things to the meta sometimes to set boundaries and try and address behaviour, but they became hostile and abuse me with insults, yelling, fights and try to turn partner away from me. Soon my partner had to send me back to live by myself. After living by myself I feel bad and every time I see the meta it makes my heart race and a pit in my stomach. I am avoiding them completely. I got a psycholgist and they say I have trauma from it. My partner is the best person, so nice and caring. But how do i deal with this person they are dating? They are not good to me or them but cant see it, they think it is fine and normal. Partner and meta had been together I think 9 or 10 years so I think he is too used to being treated bad now.