Yes, fanboys are pathetic.
I've seen pretty much every "revive aerith" cheat code in existance. To list some of my favourites:
1) Get 99 Tissues:
Go to the battle arena in the Gold Saucer and lose 99 times to get 99 tissues. Then go to the lake where you laid Aerith to rest and she'll come back to your party. Pretty plausible by my standards, actually.
2) Use Holy:
Cast Holy when you get it. Trouble is, you CAN'T get the Holy materia! Whoever thought that one up obviously hadn't played the game.
3) Be Mean To Tifa:
Probably thought up by Tifa-haters who wanted her to die instead. All you have to do is pick Aerith at every point where you pick between her and Tifa. Go on her date and be sure to use her in every possible battle without getting her killed. When it's time for Aerith to croak, Tifa will get in the way and die instead. Only succeeds in making Tifa pissed off though.
4) Level 99 Aerith:
Train Aerith to make her level 99. When she dies, Sephiroth will mess up the attempt to kill her and she'll live. My friend spent 70+ hours making Aerith that level and she still died. Don't try this one unless you want to get bored.
The most well-known way to get Aerith back in the party is with a certain gameshark code. But after this, she has no good weapons and the game crashes at certain cutscenes. I don't know the code though.
The premise of the flash is pretty good. Lovesick fanboys are pretty pathetic and they deserve to be lied to. I wouldn't revive Aerith even if I could; she was one of the characters that was there but wasn't truely needed. Although she was pretty hot.
Can you change that voice when (or if) you make a sequel? That was possibly the most annoying voice actor ever. And the sprites were pretty poorly animated, but I've never been a big fan of sprites anyway. I hope you make a sequel making fun of FF7's absurd amount of fan obsession. This was actually pretty cool. Make more.