i was going to start a thread asking the same question... now i don't have to
tbh i could never fantasise about being raped by a very good-looking guy... the fear and repulsion is one of the most exciting things for me. he always has a clear face (i like them to force me to look them in the eye) that's not hideous but not conventionally attractive, but whether a guy will make a good 'rapist' is more down to his personality/demeanor than physical appearance.
i'm glad there are plenty of other girls who have similar thoughts... i was getting worried, heh.
