My initial reaction to the ep was that Moondancer was just lonely and related to Twilight more (both study-nerds) and that THAT'S why she was so upset that Twilight let her down. I joined in a debate arguing this point and, that done, felt free to join in with the shipping point of view!
Blushing edition: haretrinity.deviantart.com/art…
(least popular version will be moved to Scraps later)
If you have a theory on what Moondancer's saying (silly, naughty, or otherwise) then I want to hear it!