the.com/cutie

means An affectionate, informal way of calling someone attractive or endearing, usually in a casual or flirty tone.

from Simply 'cute' plus the informal '-ie' suffix that English loves to tack onto words to make them sound fond and diminutive (think 'sweetie,' 'cookie,' 'auntie'). 'Cute' itself is a worn-down form of 'acute,' which originally meant sharp or clever — a 'cute' person in the 1700s was shrewd, not adorable. The meaning softened over time from 'sharp-witted' to 'charmingly pretty,' and 'cutie' rode in on that shift sometime in the early 1900s as American slang.