Flash is one of the big what ifs in the FIM I feel like he would be like Shining Armor where he shows up once or twice a season and will be mentioned by name or maybe Spike sending or receiving a letter. In equestria Girls he could have been a main secondary character

My headcanon is that Flash Sentry and Derpy are best friends in both the Human and Pony Worlds.

Haha, your crush is more successful and busy in life than you do.

@Background Pony #5220
no she don’t, plus Flash and Twilight both know is not easy to be a Guard and Princess relationship, You think is be easy for shining armor? of course not, duty and other thing to do, but ones found the perfect time to be together both will not miss the chance, and is the same for Flash and Twilight, Plus do you think the Girls want be in the way of love live of Twilight? of course not, mostly Rarity, knowing the girls, all them will all in their power to make sure the date of Twilight with Flash be Perfect. Derpy here cheer up Flash because she smart enough to get it is not easy to be a Guard and most a Guard who have relationship with a Princess, Flash when he have the chance to have his date with Twilight, he will good care her and make her happy! he know if he break the heart Twilight, Shining will break something on him but the girls will be first but He not Dum.

Flash you might as well try to find another mare Twilight probably only see you as a friend

Ha, it’s a recreation of Derpy patting Flash’s shoulder, but with their pony counterparts.