I (26M) live in a two-bedroom apartment with my roommate (27M). We’ve been living together for almost a year, and things were smooth at first — we split bills, chores, all that. But the issue is his girlfriend.

She doesn’t live with us officially, but for the last couple of months, she’s been here every weekend — Friday night through Sunday night, sometimes even Monday morning. She showers here, eats here, and uses our Wi-Fi like she pays rent. I barely get any common space time anymore. Sometimes I walk into the kitchen in the morning and she’s there in her pajamas like she lives here.

I brought it up to him and said, “Hey man, it kind of feels like she’s basically living here on the weekends. Can we talk about limiting it a bit?” He got super defensive and said I was “trying to control his relationship” and that it’s “his right” to have guests over.

I reminded him this wasn’t just about one weekend here and there — it’s constant. I don’t mind her personally, but I didn’t sign up to live with a couple. He rolled his eyes and now barely talks to me unless it’s about bills.

Some of our mutual friends think I’m being uptight and that I should “just get used to it,” but it really does change the vibe of the apartment when there’s a third person always around.

So… AITA for not wanting my roommate’s girlfriend to stay over every single weekend?