Point in case:
"He simpers, and smirks, and makes love to us all"
-Pride and Prejudice
We all know that person. The effortlessly moody, yet sultry character. In reference to Pride and Prejudice, these words are used to describe Mr Wickham, and or those who have not read the book (which I wholly recommend you do so), Mr Wickham is not a very nice man. Rape is insinuated on his behalf, yet he maintains a brilliant front of composure. Although not necessarily to this degree, I know you know someone like this. And yes, like me, you can't help but be intrigued by them... and possibly want to make love to them.