Do they have to be female? The demons in Sarah Rees Brennan's "The Demon's Lexicon" will seduce anyone, any way they can, in order to get a little time in the human world, away from the barren waste of demonkind. They can be anything you want - lover, parent, that child you wanted but never had - and give you a taste of happiness that's so intense you'd give anything for a bit more.
The catch is, of course, that you'll end up giving everything.
Prequel short story:
http://sarahtales.livejournal.com/164555.html#cutid1