Her boss. At first, she called me Mr. Zooropa, using my first name, which is very common in this region to show both respect and warmth. I told her Mister was unnecessary and she's called me sire or boss ever since.

I work in a very formal company and I know in her last job, which was customer-facing, it was strictly verboten to use others' first names. They would get written up with a citation, I saw she had one on file when I hired her.

I think she's having fun with me, while sticking to the old "no first name" rule, to cover her derrière just in case. She's practically native English speaking, like most middle class Filipinos and Filipinas.