I have looked, but so far I have come up empty on this.  I am looking for any fic that involves Ruby possessing Sam.  I am particularly hoping to find something that involves Ruby possessing Sam for non-evil reason, like one of them thought it would be fun/kinky, or she does it save Sam or Dean or something otherwise altruistic.  But I would be very happy if I could find anything involving her possessing Sam for any reason.

I know its probably a long shot, but I am really hoping there is something out there like this.