Me (29F) and my flatmate (30F) were decent friends not close, but we got along. We decided to move in together as we both wanted to switch. It was urgent for her: she wasn’t getting along with her other flatmates and had trouble traveling to work. For me, it wasn’t urgent; I just wanted a bigger, more independent space as I had been in a very small room. Local rules require rent to be about 1/3 of combined household income. She didn’t earn much, so the apartment had to meet that rule based on both our earnings. I earn relatively well. After searching, we got one. She pressured me into it. It was somewhat isolated: a 20-min walk to the subway, buses weren’t great. I didn’t like it but reluctantly agreed since I have a flexible schedule. She said she didn’t like cooking but would clean, so we agreed I’d cook and she’d clean. Things were fine at first, but then she had an emotional breakdown after breaking up with her boyfriend (long story: they broke up over religious differences cause of her mum; he had moved countries for her). She accused me of not caring, but I didn’t know what she wanted from me. I tried supporting her through her toxic family situation. She almost stopped doing anything, and I ended up doing all chores. I grew unhappy, especially with her drama. For context, when I went through a painful breakup 1.5 yrs ago, she didn’t even reach out even though she knew. I met my now-bf around that time and started spending less time at home. She said she was okay whenever I checked. After almost a year, my boyfriend and I decided to live together. Initially, we planned to move at year-end but had to move earlier. We had two options: I move in with him, or he temporarily moves into my room. We chose the former. I checked with my flatmate. She just wanted to know if we’d split rent and utilities three ways, and we agreed. It’s a 2-bedroom, and he’d stay in my room. When he gave notice, she said he couldn’t stay if relatives or her mother visited (her mom might stay 1–2 months) and wouldn’t like a guy living with us. I suggested adjusting the rent: we’d pay a bit more since I have an ensuite, but it wouldn’t be equal. Both rooms are the same size otherwise. Also, finding another apartment would be difficult last minute as there's a housing crisis here. She got upset over it. When I asked why rent should be equal, she threatened to complain to the landlord. In an argument, she accused me of “using” her since she helped me find the room when I first moved here, claimed I never considered her a friend, and criticized me for not telling her about “moving from one bf to another,” in front of my bf. I was furious. We eventually agreed to split rent on the condition that he wouldn’t stay anywhere else. After this, I stopped speaking to her. She never apologized. Even around mutual friends, I don’t acknowledge her. Recently, she told my bf she’ll move out in 2 months. He just told me, no further comment though he once said I can be cold at times.