I asked a friend of mine why I got so many stares in Taibei when I spoke English on the street and she said that perhaps they thought I was trying to show off by speaking English to show how good it was.
Also a while ago a friend of mine told me that one of the people in our office is called Butterfly by the other teachers because she only goes out with foreign men and likes to show off by speaking English all the time.
The tension between Westerners and Taiwanese people is mostly kept under the surface but it's times like this when it breaks out. Clearly there's some sort of sense of exclusively dating Westerners means that you are putting on airs or pretending to be something that you're not. I'm not sure if I would go so far as to say people feel that Westerners are superior. Certainly most of the expats I've met here are hardly what I'd call gods among men but still there seems to be a power dynamic of some kind. Interestingly at least from my perspective it seems like much of this is directed at Taiwanese people who "put on airs" by speaking lots of English and not Westerners themselves. So maybe it's not really a Western-Chinese thing, but more of a cultural thing or even a social thing. I'm not really sure what I think of all this. It's just some thoughts for now.