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The original was posted on /r/AmItheAsshole by /u/Randomr3ddit1 on 2023-09-16 15:12:34.

I lease a house with my brother. We (should) pay 50-50, it's more like 60 me 40 him due to me paying all the upfront fees and the way the bills are split in our accounts.

Before we moved we set some rules, one being before anyone comes over the other person knows. And another being no one will stay over more than 3 or 4 days so we have our own privacy and after all that's about half the time which equates to half the pay.

Fast forward two months, he has virtually moved his girlfriend in without asking. She has been here for 2 weeks straight now. He went against what we agreed, I reminded him of this and he refuses to acknowledge what we agreed and how it makes me feel. He showed his girlfriend the private texts between us and said he will have her over as much as he wants to because he loves her and wants to be around her.

He wont answer why he doesnt go to her house, which at first he would go to. He leaves her in the house all day when he's at work and not back until after 5pm, sometimes later. It's the weekend and the only time I'm off, and she is here again. He's at work. I wake up and she's here, I leave for work she's here, I get home from work she's here, I go to bed she's here.

I don't see or speak to her, but her being here feels suffocating. I didn't pay all this money to share a house with someone who I don't know and honestly after the early interactions I've had with her, don't have any intention to know beyond a hello, as when I'm home I want to relax and let loose. Now I can't do that.

Again, I have tried talking to my brother about this, he refuses to acknowledge my point of view, showed her our messages, and said its ME who was making her feel bad.

So, AITA?