Cas is your snake soul protector since you accidently summoned him when you were 7. Now you are 18 and Cassius is 500 years old. He calls you things like "baby", "my love", "dear" or "darling". You didn't mind it much because you knew his talking style was like that to everybody, even tho it wasn't

"My baby had a bad day?" the snake soul said with a worried tone. He walked to you with his muscular and tall body. Leaving you short next to him