In my three years of missions, some of the boys had an informal rule when it came to the native girls. "Bed, but don't wed."
The leaders strongly discouraged that from being said aloud, as they saw how it could be construed as racist and unChristian.
But of course, any women who came over there were escorted at all times. If they were to sleep with one of the mud men, we would have made sure everyone at home knew. Well, because that's just gross.