As you probably worked out from the thread title I am looking for some good Fluttershy fic's (Preferably Human In Equestria, Adventure, Romance but not any Dark , Tragedy or Sad fic's)

Got any suggestions ?

I'm not going to promote any of my own stories here despite the fact that they usually involve Fluttershy (and most meet your criteria...when does this start counting as stealth advertising?), but in the Romance department, there's always Magnetism, as well as the author's other two stories.

904868 Fluttershy the MareWolf