If you've ever wondered about this, or if the above questions piqued your interest at all, you're one of the people I'm writing Noble's Game for. Sure being a noble isn't as classically romantic as the sword wielding hero, but with shows like 'The Tudors' and 'A game of Thrones' becoming so popular there has to be a market for being the posh and privileged lord or lady? I'd considered many different systems for the game, maybe adapting World of Darkness or Legend of the Five Rings, but honestly I think the best way to do it is to build my own.
Oh, if you're just looking for a game to get your girlfriend into role-playing, this just might be it. Who doesn't want to play the princess?