NOTE: Please do not leave short, vague comments.
 
Sunset Shimmer: Flash, don’t! Just ignore them.  
Flash Sentry: No way! I’m not going to let them get away with saying something like that to you!
 
I don’t know but I just think it would be really cute if Flash Sentry would get really defensive if someone insulted Sunset Shimmer or flirted with her or something but I think the first thing I said would be more plausible in terms of getting really pissed off.
 
But I think a good reason Flash looks so pissed off here is maybe some other guy said something really derogatory towards Sunset and Flash doesn’t appreciate it at all because in my eyes he has a high respect for girls and hates when guys talk to/about girls in that way. And when you’re like that towards Sunset Shimmer it’s a hundred times worse since she’s his girlfriend.
 
But hey, that’s just me giving Flash Sentry my own character traits to make him more likable. And also I’m a huge supporter of FlashShimmer.
 
My Little Pony: Equestria Girls is (C) Hasbro Studios