Insane Love [MLP WATTYS ENTRY]

If a Queen of Changelings gets fat from the memories of Rainbow Dashes love affairs, then how well could this fare for the whole hive, and Discord?
And with insanity eating up half of the population and leaving a quarter injured, can Rainbow Dash and Fluttershy beat it with love?

Warning! Strong language, lemons, gore and mature themes used!
This is my entry for mlpwattys2015!