This story happened to my distant relative, a Moscovite.
My native country is wide, there are many peoples and peoples, autonomous republics and regions. Here is our hero - let us call him Ivan Petrovich Sidorov - not purely Russian, but for a quarter... let it be a papua. His mother’s grandmother came from the Papuan SSR, where the young papuas are famous for their non-terrestrial beauty. Outside, Sidorov looks like a purely Russian man, light-haired and blue-eyed. But the Papuan language he is taught and mastered in perfection, as well as Russian.
And here in his work appeared a new employee - a true papua. Young and beautiful. Ivan Petrovich fell in love with her at first sight. And she did not reject his pleasures, they became close friends, she went to visit him, and he visited her family, who lived in Moscow on a rented apartment. But until then he decided not to devote the future bride to the mystery of her origin.
And one day, when he was visiting Papuanka and her parents (and they spoke exclusively Russian with him), the phone ringed in her apartment. Papuasca removed the telephone and spoke in her mother tongue. Ivan Petrovich quietly talked to his parents, pretending that he did not understand what his lover was talking about there. "I found a fiancée in Moscow, soon we will marry and move with his parents and younger brother to his three-room apartment. The youngster is not rich, but, as you know, suddenly there will be a more profitable party in the future."
When it was time to say goodbye, Ivan Petrovich told her in the purest Papuan language: "You think in vain that I don't understand Papuan."