Celestia and Luna married the mane six, now they have a harem and a honeymoon to deal with. In all honesty, happily ever after isn't all it's cracked up to be. At least there'll be room for orgies.
Have you ever gotten so drunk you forgot you offered the princesses' hoof in marriage to whoever brought your sister back? And how many 'es' there are in 'Princess'?
While consoling Rarity following the break-up of her most recent affair, Rainbow Dash lets slip by accident that she has held affections for the beautiful unicorn for years, but once the secret is out how will she react and what does the future hold?