DAMON:
Baby. Simple and sweet and it totally melts you away when he says it.
STEFAN:
Princess. He treats you like one so why wouldn't he call you one?
KLAUS:
Love. It's almost the most affectionate thing he will say in public. He doesn't want people to think you guys are an item because of how many enemies he has.
ELIJAH:
Beautiful. He loves to remind you how beautiful you really are.
KOL:
Doll. Whenever he is talking to you, he always throws that in. Doesn't matter if it's an argument or he's declaring his love for you.
KAI:
baby, sweetheart, darling, gorgeous, beautiful, sugar, honey it doesn't matter. He's all about pet names for you. He only actually says your name if you're in danger.