Nah it is not about culture. It is about us being different people with a different take on friendship. I actually don't mind her barging in or using my stuff. The only time we sort of clash is when it is about how much time we should spend together. We fit each other very well in other aspects. But she likes to hang out always, while I like much more time on my own. I'm not even sure it is appropriate to talk about boundaries in a relationship like that. More that we need to work things out our own way. We live in a kind of symbiosis foreign to most people. You don't simply try to cut out a square of that and claim that as yours. What should the other part do, withdraw other things so it evens out?
If I demand a "normal" relationship from her I demand she becomes neurotypical, and what is more, I also have to become NT. That is what is truly needed for normalcy. Needlessly to say, none of us can change our neurology.
Yeh of course I'm glad to be left alone because I need that in my life. I also need her in my life. She feels the same as I do, I feel she is here all the time, she feels like we don't meet as much as she wants. In most psychology more power is always given to the withdrawing part, in the name of boundaries.
More important, I haven't yet watched a movie!