I know bronies in general don’t tend to have experience with sex or females at all, but you all would do well to learn that ones personality does not automatically determine what they are like, when it comes to sex.
 
Out of the girlfriends I’ve had, the most kinky one was also the shyest one. There’s even a saying “It’s always the shy ones” or something like that.  
Does that mean that all shy ones are super kinky? No, of course not. People are individuals.
 
Hope this helps someone in the future.