Edward~

Sunshine.  You light up his world and make him feel warm inside.

Jasper~

Darlin'. His southern accent just makes this nickname so much better, his eyes always soften when he calls you this and his voice is smooth as honey.

Emmett~

Baby. Simple, easy, common. He honestly didn't mean to call you it for the first time but you liked it so much it became a force of habit.

Carlisle~

Sweetheart. His old-fashioned nature was bound to come with a few older nicknames. He uses this nickname far more than he uses your own name, which makes it all the more romantic.

Caius~

Caius doesn't use a nickname for you while he is around the others, he only uses your name, but on more than one occasion you have heard him mutter "Mi Amore" at you as you are just about to fall asleep.

Alec~

Alec refuses to use a nickname for you. He simply calls you by your name and nothing else.

Alice~

Alice, for some reason you did not know, liked to call you, her butterfly. She'd lay next to you at night or walk up to you in the hallway at school and just give you that dazzling smile before kissing your cheek and giggling out "Hello there butterfly."

Rosalie~

Rose loved to call you Hun and sweetie. It seemed natural for her to call you those nicknames; as if it was second nature for her to replace your name with the cute pet names.

Jane~

Jane is not the touchy-feely type or the kind of girl to like pet names. So whenever she felt like a little extra affection was needed she used a simply shorter version of your name. It wasn't ideal but it is what it is.

Please be sure to point out if im missing anyone or if you want me to add someone in these!!