We Love You, Sally Carmichael!.

Readers across the world are in love with author Sally Carmichael's series of romance novels that chronicle the epic love story between a human girl and a merman. But no one knows that Sally Carmichael is really Simon Hayes, a bitter, serious novelist - and Simon would like to keep it that way. When he is forced to meet a movie star about the movie adaptation, his life of anonymity starts to crumble.