Books with: physically impossible romance (another planet, time travelers, cursed, etc. - no vampires).

[Laura]

I'm looking for an impossible romance (in terms of the physically possible). Eg: from another planet, time travelers, cursed, etc. Just no vampires please.

[Not-Mary]

The Ghost Eater
Under a Prairie Moon
Ghost Walk -I wasn't sure if to recommend this one since, unless they fixed it, it's got a few misplaced words but it's still highly enjoyable, so here you go.

[Laura]

thank you! I will look for them right now!

[Laura]

the last one is the one that caught my attention!