Dean- He calls you beauty because when he met you, you were just reading away and humming while drinking a cup of tea.
You calm him Beast, because you we
are his beauty, he is the beast.Sam- He calls you Cookie, because it's your favorite thing to eat and, you eat it too much.
You call him Love, you got it from Crowley, it's just caught on.Castiel- He calls you Angel, because you are his angel that saved him.
You call him baby or puppy, you call him puppy because he looks like one most of the time.Gabriel- He calls you Smarti, because it's the name of your favorite candy.
You call him Loki, it's your favorite from the avengers and it suits him.Crowley- He calls you Buffy because when you first met, you killed a whole best of vampires and he called you Buffy and it stuck.
You call him, the dark lord. Don't know why, but you do!Lucifer- he calls you Bunny. Your obsessed with bunny a and you want one so bad.
You call him Luci, it's shorter version of his name and you like it.