One reason why it may be taking so long to breed your flareon is that it doesn't like the Pokemon it is with.
You can't preevolve Pokemon so you if you want another evee breed flareon with ditto, or if the flareon is a female you could breed it with another Pokemon, as long as they are from the same egg group.
Either Catch or receive an Eevee and use a Fire Stone on it so that it will evolve into Flareon.
You shouldn't have to do anything because Flareon will like Ditto, they're breeding compatible so they'll breed but breeding for them to lay a Pokémon Egg will just take awhile if they have the same original trainer however if they have different Original Trainers then the breeding for an Egg will be a lot faster.
it is taking so long becqause tumblr sucks so yep
why is my federal tax check taking so long
Any breed so long as it is a blind person's guide dog.
Nope. So long as it is a hamster.
so u can tell when there happy
They can breed at any time and any month, so long as they're not pregnant already.
So long as they are from the same breed and both parents are registered, yes you can breed a trotter to a pacer and register it.
To ensure you get a Flareon in Pokémon GO, you need to name your Eevee "Pyro." After renaming it, simply evolve the Eevee, and it will transform into Flareon. This name trick can only be used once per account, so use it wisely!
any fire type Pokemon can use one, so long as it has another stage of evolution available. eevee can use one to evolve into flareon