re: life-lines
My comment was from my experience, that American girls seemed to me more romantic, and attracted to me, than Australian ones.
I've never been to Australia (and I definitely intend to go there some day), but I've heard from American servicemen that Australian women seem to prefer American men. They say it's because American men will pay attention to the women, while reportedly Australian men are more likely to go to a bar and hang out with their friends, leaving the women hanging. I don't know if that's true, of course.