Is AUTHOR wrong in the post ? POST :  I live with a girl, let's call her Sarah in a 2 bedroom, 2 bathroom apartment. 

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It seemed fine at first, but quickly small issues started becoming a problem. For starters, Sarah's girlfriend (they started dating right before move in) began living in the apartment right off the bat. Now like I said, its a 2bd2ba, but the kitchen and shared space is very small, so it definitely became very cramped. I really like the girlfriend, she's super nice but she doesn't pay anything to be here, despite being in the apartment every week at least 4-5 days at a time. I attempted to bring this up with Sarah but felt like it was dismissed as being no big deal. This was also something she never asked if I was comfortable with, never asked if I minded, just starting having the girlfriend live with us. I didn't really push it, because I didn't want to make my living situation difficult/cause fighting. 

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I am a very clean person and Sarah is not. She almost never does the dishes. When she uses dishes, she leaves caked-on food on pots, pans, and plates, and leaves liquid in cups all the time. There will be empty food wrappers and open things of food left out on the counter, and she constantly leaves spilled food all over the stovetop. She will put dishes in the sink sometimes, but that’s it. I'd often just do the dishes because 1. they were mine, and 2. I needed clean things to eat/use. Some friends convinced me that I should stop doing that and let her deal with the mess that she made, which I was starting to agree with. 

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So then, the dishes would sit in one side of the sink, start to smell, and then her girlfriend would eventually do them for her. Again, some of these things are mine that either I paid for or my parents got for me, and while it's not like they are fancy (IKEA brand, target, etc.) I would prefer that they don't get ruined by sitting in dried grease and left to grow mold. I tried to talk to her about dishes multiple times, sometimes a quick reminder to clean up after herself, or just a comment here and there, and always nicely. 

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So today I made a decision. I move out in May, which is about a month away at this point. I went into the kitchen, cleaned all the dishes that I owned, and then took everything in the kitchen that was mine and packed it up. When Sarah and her gf got home, I claimed that I wanted to get some stuff packed early (not technically a lie) and that I felt like we had enough duplicates of things that it wouldn't be an issue (also not a lie, she has plenty of plastic cups, plates, bowls, and recently bought plastic silver-wear to avoid doing dishes). Her and her girlfriend were absolutely fine with this, and didn't seem to care. I can't help feel a little guilty about it, because I 100% know it was passive aggressive, but after multiple times trying to get her to clean, I didn't feel like I was being listened to. So, AITA?