Everyone was born with a piece of ruby. 

A bright, shining, red ruby. 

When it became dim, it meant your soulmate was between life and death. 

But when it became completely black, that meant the one you will spend you lifetime with, was no longer exist.

And when it changed its colour to a shade of blue, then you have found him.

Then, what happen to the girl, that get her ruby changed to another colour?

It was red. Then it was orange. Pink. Purple. And finally a shade of blue?