Maybe Cadance was trying to be stealthy with how she was shipping those two and she was nearly about to get someplace with them, before Celestia accidentally walked in on them. :p
If something was happening between Twilight and Flash before she and Celestia walked in, then she’s probably feeling awkward for having killed the mood.
As the Princess of Love, Cadance looks like she’s trying to appear far too oblivious. I’d have thought she’d be “clopping” her forehooves together with a big smile. Unless she hates Flash Sentry like everyone else does. In that case, she’d just let Celestia incinerate him with a sunny look.
Oscar Wilde wisely said “Be yourself; everyone else is already taken.”
“Like everyone else does”
Good thing mom always said “you’re not everyone”
Edited
I think you are not aware of how Cadance behaves dm29’s art:
If something was happening between Twilight and Flash before she and Celestia walked in, then she’s probably feeling awkward for having killed the mood.
Also, Flash Sentry is back!