Not a therapist, but would definitely say it’s sexual addiction. Hyper sexuality in and of itself is not a bad thing; however, once the urges associated with it start to have negative impacts on your life, you are unable to control your actions, its self destructive….it’s time to seek help, I’d think. And there’s more than just hyper sexuality going on, as you mentioned the ideas of both using and feeling used, so I imagine there’s more depth to this than just being very sexual.