I have had this concept I've been kicking around in the back of my head. A demon, Supernatural being, or a god. That has fallen in love with a mortal, but for whatever reason. The mortal doesn't pay them any attention whatsoever. Ignores their advances. Can't physically see them. Doesn't believe they are who they say they are.

The list of reasons why the lady refuses can be workshopped. As well as the timeframe and what not. No one might have interest in this. But if you do help me workshop the idea!