Headscratchers / Bride of Discord

• While I loved this fanfic, I have to wonder: since when does Discord of all people (who has something of an Awesome Ego) consider himself a "lowly draconequus"? Sure, I might buy that to a degree he'd think Fluttershy is much more virtuous and prettier than himself, but why would he suddenly have such a self-esteem plunge?
• Why does no one acknowledge how creepy it is that Applejack, a grown adult mare, has a crush on Spike, a baby dragon? Even Zecora tells her that he's too young!