Another My Little Pony: Equestria Girls film came out when I wasn't looking! I came across it when scrolling through Netflix, crowed with laughter, and then (inevitably) watched it.
Legend of Everfree pretty decisively sank Twilight Sparkle/Flash Sentry, which I'm sad about, because I'm the only person on the planet who genuinely enjoyed that romance subplot. Their interactions were really cute!
Also, I'm fascinated by the potential dynamic between Flash Sentry and always-a-human Twilight Sparkle.
For those who haven't seen the Equestria Girls films, i.e. most sensible people: there's 'our' Twilight Sparkle, the pony, who takes human form when she crosses to the Equestria Girls parallel universe, but there's also human Twilight Sparkle, Twilight's counterpart in that parallel universe. So there are two Twilight Sparkles, and the one Flash Sentry first met was the pony one (although he didn't know she was usually a pony at the time). Pony Twilight Sparkle, the one Flash knew (and had an oddly cute semi-romantic dynamic with, bearing in mind that he is a teenage boy and SHE IS A PONY) has now returned to her dimension; Human Twilight Sparkle has recently appeared on the scene.
Early in Legend of Everfree, we get this scene between Flash Sentry and Human Twilight Sparkle:
Flash Sentry: (hands Twilight her backpack) Here you go, Twilight.
Twilight Sparkle: Thanks. It's... Flash, right?
Flash Sentry: Yup, that's me! (remembers that this... isn't actually the Twilight Sparkle he knows, crap) And you're you. And... we don't know each other very well. (turns away and mutters to himself) Cool story, bro.
Twilight Sparkle: Right. I guess I'll... see you around.
(Flash leaves. Twilight looks helplessly at Sunset for an explanation.)
Sunset Shimmer: You know how there's that girl who looks just like you when she's here, but lives in another dimension, and she's a pony princess?
Twilight Sparkle: Uh-huh.
Sunset Shimmer: Flash kind of had a thing for her.
Twilight Sparkle: Oh.
The stranger the relationship dynamic, the more a pairing tends to appeal to me, and I already thought Twilight Sparkle/Flash Sentry was pretty cute. How could I resist the added weirdness of pairing Flash Sentry up with a different version of Twilight Sparkle when he still had feelings for the first version?
But then Human Twilight Sparkle went off and got a crush on SOME ARSEHOLE (I really didn't get along with Timber Spruce), and Flash Sentry was advised to get over the girl who is separated from him by dimensional barriers and also a pony, and I was deeply disappointed. I wanted weird, slightly unhealthy romance built on a foundation of 'I have a crush on an alternate-universe version of you'! Yes, all right, perhaps it wouldn't be terribly appropriate for a colourful children's film, but it would be interesting!
There's a part of me that actually wants to write 'I'm pining after your pony counterpart, we should definitely get together, this is a fantastic basis for a relationship' Flash Sentry/Human Twilight Sparkle fanfiction. It would be incredibly regrettable. I will try not to write this, but I can make no promises.
This is the worst entry I've ever made. I'm so sorry.