I haven't heard of it.
I'm happily married now, but the road to that was filled with a lot of heartache. (not from my husband, but from other men that I fancied throughout my teenage through young adult life)
A lot of it sounds just like what my Mom and Grandma kept telling me, but I wouldn't listen. (common sense?)
Through some cruel twist of fate, we are obviously destined to be deaf and/or incredulous when the people who care the most about us are giving us good advice. Yeah, sure, it all seems so clear NOW...when I don't need the advice anymore. But it worked out just like the book says (just like most common sense does). Working up to our first date and beyond, the "right guy" made it quite clear he was just as interested in me as I was in him. (Our eleventh wedding anniversary is tomorrow.)
Bullseye! Same for me except we're on the opposite sides of the track gender-wise. I never sweated anything when I started dating my wife.
Ain't that the truth? It seems like so much obvious, common sense, but sometimes people delude themselves and need to be slapped back into reality.
I've been married for 12 years now, but I think I'll keep the line in my arsenal as my daughters are (too quickly) approaching dating age... It seems a lot more clear-cut than any of the advice I received during my teenage years!