26-year-old brother kicks 22-year-old college grad sister out of his apartment after she breaks his one rule to not invite strangers over: "One of them was drinking from my mug"

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Ely Bulnes • Writer and Editor
Jun 19, 2025 5:00 AM EDT

Every day, I thank my lucky stars that I am out of the part of my life where I lived with roommates. Well, I do have a roommate of sorts – my partner! But we're pretty good at managing our domestic squabbles. Gone are the days of living with semi-strangers or college acquaintances that should have remained the type of friend that I occasionally catch up with over coffee instead of seeing every morning. Even your closest bestie can absolutely drive you up the wall over sharing, bills, and chores once you start living together. 

In our story today, a generous brother lets his little sister stay with him while she gets on her feet after college. It's a pretty good gig for her; she gets a place to live for free, and she only has to follow one simple rule: no guests. Surely, she would respect her brother's space and not mess this up, right? Read the full story down below to find out!

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  • 01

    AITA for asking my sister to leave because she brought people into my house?

    I don't think I should have to feel like a guest in my own space.
    via LukaTDB

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 02
    I (26M) live in a one-bedroom apartment. I work remotely and I prefer to keep to myself My younger sister (22F) graduated college a few months ago and moved in with me temporarily while
    via u/Meowscals
  • 03
    she applies for jobs and gets on her feet since our parents moved south when we both left the house. We've always gotten along pretty well.
    via u/Meowscals
  • 04
    The only thing I made clear when she moved in was that I'm not okay with people coming over. I don't host, ever. I don't care if it makes me weird, I just don't feel safe around unfamiliar people in my space. I told her that early on and she said she understood.
    via u/Meowscals
  • 05
    Cheezburger Image 10518868992
    via SrddjanPav

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 06
    This weekend I got back from a walk and there were three people I didn't know sitting on the couch. One of them was drinking from my mug. They were laughing, watching a show, super casual like this was their place. My sister just waved like it was no big deal and said "hope you don't mind."
    via u/Meowscals
  • 07
    A
    via Renen Cajal from Pexels

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 08
    I didn't say anything. I turned around and left. I was outside for like two hours just walking. When I got back they were gone. I told her I can't do this. I said I'm sorry but I need her to start looking for another place to stay.
    via u/Meowscals
  • 09
    She got really upset and said she didn't think it would be that big of a deal. That they were only there for an hour and they weren't loud or messy. I told her it's not about that, it's about how it made me feel in my own home. I don't think I should have to feel like a guest in my own space.
    via u/Meowscals
  • 10
    Now she's staying with a friend for a few days and my parents are p ed. They say I'm being extreme and ungrateful and that I should support her while she's trying to get her life started. They said my
    via u/Meowscals
  • 11
    sister called me embarrassing. But I honestly don't know what else I could've done. It's not about punishing her. I just don't feel safe when stuff like this happens. So yeah. AITA?
    via u/Meowscals
  • 12
    10 COOKS
    via Blue Bird from Pexels

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • This maybe could have been a warning before kicking her out completely. That said, he made the one rule of his home abundantly clear, and she completely disrespected it.

  • 13
    Zealousideal_Bee653 NTA dude you set a clear boundary and she straight up ignored it.
    via u/Zealousideal_Bee653
  • 14
    syrupglitch Just this. It's not about being a bad host..it's about respect. She treated a clear boundary like a casual suggestion.
    via u/syrupglitch
  • 15
    emilyechos If she can't respect a very simple and reasonable boundary, she can't expect to stay rent-free. OP didn't blow up, he handled it with grace. She's lucky he didn't throw everyone out on the spot.
    via u/emilyechos
  • 16
    EnvironmentOk5610 If the sister had immediately sincerely apologized and promised they'd never again invite anyone over I might advise OP to give her one more chance before kicking her out, but sis clearly thinks OP is weird and wrong for having a no- guests rule, so would v likely blow that second chance pretty quickly
    via u/EnvironmentOk5610
  • 17
    milkycatt She didn't just ignore it - she handed your boundary a mug and made it watch Netflix.
    via u/milkycatt
  • 18
    stoic_prince Agreed. I don't understand why the parents called him ungrateful though? Was the sister doing him a favour by staying with him? Lol
    via u/stoic_prince
  • 19
    Feisty_Bag_5284 And op is apparently ungrateful for doing sis a favour
    via u/Feisty_Bag_5284
  • 20
    darknessatthevoid NTA. Your house, your rules. You were clear about those rules, whether she thinks it's weird or not, doesn't matter.
    via u/darknessatthevoid
  • 21
    mintblissh Thiiiis. If someone sets a boundary in their home and you ignore it, that's on you. Doesn't matter if others think it's "not a big deal."
    via u/mintblissh
  • 22
    Melodic-Skin9045 NTA. I do not like strange people in my place either which is why I live alone. Tell your parents they are welcome to spring for an apartment for her while she gets on her feet but that you are done. She
    via u/Melodic-Skin9045
  • 23
    disrespected you. You are not roommates, she is a guest and there is a world of difference. Shed is not paying rent or bills so she has no say. If you give in, this will continue.
    via u/Melodic-Skin9045
  • 24
    Carmen Dee Jay I am uncomfortable with ANYONE in my house and am actually stressed out before they are supposed to arrive when I know they are coming. When people arrive unannounced, my stress goes through the roof. NTA. Boot the sis. Berate the parents.
    via u/CarmenDeeJay
  • 25
    BreakEffective8641 My adult stepson we love with is a bit antisocial. He's never had anyone over other than his brother and sister in law.
    via u/BreakEffective8641
  • 26
    Anytime I am going to have someone over I always tell him ahead of time so he doesn't walk out of his room to someone here or get home and someone's here. He never set this boundary but i know he's not a social butterfly so I minimum give a heads up.
    via u/BreakEffective8641
  • 27
    FewSplit4424 I'll be contrarian and suggest that perhaps she somehow didn't understand how seriously you take this, how bad it would make you feel, and how serious the consequences would be.
    via u/FewSplit4424
  • 28
    Maybe give her another chance, but make it implicitly clear, NO THIRD CHANCES. One strike and you're out (literally) would be harsh for a friend, it seems unreasonable with your sister (that you get along with and love).
    via u/FewSplit4424

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Tags

family drama AITAH sibling rivalry Female Empowerment siblings relationships entitled family boundaries sister roommates entitled people apartment brother
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