Jesse Puryear recently proposed to his girlfriend while white water rafting on the Ocoee River in Tennessee. He nearly lost the ring, if that's not already obvious, and the entire emotional roller coaster was caught on camera. The ring had been originally secured to his life vest, but he was still holding onto it after he popped the question, and then they went through a monster rapid. There's probably a metaphor in there somewhere for engagements or marriage:

Sources: Mashable