Good evening Brits Should I tell her,How can I explain it?

Last night my trophy Asian wife told me she felt that Japanese an Koreans actors were better looking than they use to be,being a polite person I did not want to tell her that tens of thousands of American troops have been stationed in these countries for 40 50 years she sure knows how irresistable we are but I was fearful she might asked why it never took hold in the U K . So help this yank out and explain it