I don't want to quit, i enjoy the game. But with the new updates it doesnt seem like the runescape i used to enjoy. Who knows, when everything settes down and the GE prices sort themselves out it might be better. Until then i'll just keep playing.
I hope the cops can see sense, but as it has been said there is not an awful lot you can do. I also hope your girlfriends parents will accept the money from you and take it no further.