A Supernatural Need

I've always liked the idea of being wanted-- needed by someone powerful, mostly in the fantastical sense (what can I say, I'm a nerd). Say, a vampire that doesn't want to hurt me, but is in desperate need of a drink. Or maybe a summoned ghost or demon that thrives off of human energy. A witch that needs something intimate for a ritual. The possibilities are endless! They might be cheeky about it, or try to remain stoic, but secretly we'd both be turned on by it, despite trying to play it cool. Eventually though, someone would slip up and let out a moan or some other tell... then the fun would begin.