sweetie

sweetie /sw'iːti/ (sweeties)
1 [N-VOC]
You can call someone sweetie if you are fond of them, especially if they are younger than you. (INFORMAL)
2 [N-COUNT]
If you say that someone is a sweetie, you mean that they are kind and nice. (INFORMAL)
3 [N-COUNT]
Sweets are sometimes referred to as sweeties by children or by adults speaking to children. (BRIT)