I think I fall in a mild form of this. I've recently opened up to sex with my recent ex. I've rarely thouroughly enjoyed sex before... And the things we did kept my interest and I loved the experience finally enjoying sex.... For myself not just what I could do for someone. I've bit him to the point of blood and liked the taste... I've scarred up his back to a permanant marks... When in the past I got excited and they said Ouch I would stop but want to dig in deeper cause they wanted me to stop. I stop and lose interest usually. But he liked it... And he was strong enough to hold me down... And he could last. I have ridden horses for years... I have very strong keigels and prominent ridges... Not many last long. We are broken up now... But its leading me to explore myself. I don't think I can be ever really satisfied with normal mundane sex again. But I want a partner ship. Most people like this I've heard of or met before aren't really life mate material.