Is AUTHOR wrong in the post ? POST : AITA if I don't like the way he asked a question, and I want to tell him why it's rude to invite himself over? 

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 I am texting this guy, and he has been over a few times. MY apartment is definitely better, we both agree on that. We are in Russia, so spacing is weird anyway, but basically his room is also the living room. I have my own room. He has told me that sometimes his sister, who he lives with, asks him to leave so that her friends can come over. That's some context.

SO he is out of the country atm and we are texting and he comes back in a few days. Out of nowhere he asked "So can I come over on saturday?". For some reason I really don't like how he asked this. First of all, I am a private person, and rarely let people into my space as it is, generally because it feels intrusive. But to me, it sounded like he was inviting himself over. My mom always said that you pretty much have to wait for people to offer their space before you can plan to go there. The phrasing of the question makes me feel like he is just expecting to come over. The thing is, I also have a roommate, but she is old enough to be my aunt, and I feel weird about having guys over, even if she says she doesn't care.

Am I overreacting? I haven't answered yet, and I feel like I should let this go, but I also don't want to be talked to like this.