9.
The couple walked near the bridge.

i'm just gonna make a story out of it.

Explanation:

The couple walked near the bridge. The same bridge the woman's younger brother had thrown himself off of almost 4 years ago, to the day. The man knew this, of course. It's why he brought her there in the first place. At this point, they were halfway across the beautiful overpass, at the estimated point of the boy's jump. The girl stopped, looking out into the darkness of the night, for at this time, nothing could be seen but the starry sky. And when she turned around, the man who found her dear brother, was down on one knee. "Since the day I met you, you have been everything I had ever wanted in a wife," he said, "And I hope you will do me the great pleasure of becoming that beautiful bride I have been imagining for four years in the making. I brought you here only because I know you always wanted your brother's blessing. So please, do me the honor of allowing me to be your husband." She just stared, shocked into silence. But, the shock soon wore off, and instead of answering, she followed in suit of her brother, leaving the man to find yet another body in the American River.  

what lesson are you referencing?

answer: the prince warns the 2 families that if they get into another fight they will be put to death