I remember the first time the whole appearance struck me as odd, was back when I was in high school, and before I was baptized. There was a young single brother in my congregation, and his sister came to visit him (for about a month). His sister was a regular pioneer at the time. I remember my mom having a fit because she was staying with him at his home, and how it did not look right that two single people be living together. Everyone knew who she was, including their neighbors, and no one thought anything about that.
I'm not sure if there were any others in the congregation who had a fit about it, but I do know that a short time after that, the young brother disassociated himself, and immediately after that joined up with the military.