I got my phd in Communication and when I taught interpersonal communication, one of the articles we would have students read had an example of an American who w

I got my phd in Communication and when I taught interpersonal communication, one of the articles we would have students read had an example of an American who was in Austria for a year or two. He was at a party talking to an Austrian friend when the Austrian's girlfriend came over. She stared using the informal "you." Later he asked her why she had decided to use the informal and she said, "I don't know. I just did it. You were talking with my boyfriend so I assumed I was on the same level as him." https://www.google.com/books/edition/Language_Shock/xOE4nPuWq10C?hl=en&gbpv=1&pg=PA18&printsec=frontcover&dq=german https://www.google.com/books/edition/Language_Shock/xOE4nPuW...