Yes, that's a huge part of their appeal. Because of the chameleon like nature of the HPD together with their often high intelligence, they are able to be whatever you desire - an intellectual interlocutor even. But will that relationship last? What you've said about the 'sexual suggestiveness' will never cease. If you are, like so many of the people on this site, and like me, a wounded child, with a 'saviour complex', then sooner or later, you find yourself addicted, and wanting 'more'. That's when you're conquered and she can pull away.
So is it possible to avoid becoming addicted? Yes, I would imagine so, if you are a stable, emotionally together person with good boundaries. Would the HDP individual be very interested in pursuing a frienship with you? I have no idea. Would she? Why, when there's no seduction in it for her? Do HDPs have such 'non-profitable' frienships with men? I don't know. I'd like to.