Princess - the most common one she used for you. It was one she wasn't shy to use. She's called you princess for as long as you can remember and it's probably your favorite of all.
Baby girl - the one that always made you blush. It was saved for more intimate moments; not one she'd use out in public much. It was one she'd use when she'd kiss your skin or when you were upset. She'd use it to make you blush, just because she liked the tint to your cheeks.
My love - it was a rarer one but she'd still use it from time to time. She'd catch it slipping from her lips mostly when you're upset. When you would come home after a bad day. "Let me run you a bath, my love" "it's alright, my love". It was used for times when you needed a little warmth in your heart or for a time when you needed comfort. There was something about how she said it that made you feel like you were on cloud nine even when you had a shitty day.
Demi is never shy when it came to using pet names for you. There are so many others she has for you; beautiful, lovely, baby doll, lovebug - the list could go on. She has so many for lots of occasions but these are her favorites. She just loves how you react to all of them and she'll use them every chance she gets