coy
Definitions
Making a pretense of shyness or modesty that is intended to be alluring.
Reluctant to give details about something regarded as sensitive; evasive.
Quiet and reserved.
Examples
She gave a coy smile when asked about her secret admirer.
He was being coy about his future plans, refusing to give a direct answer.
The actress played the role with a coy charm that captivated the entire audience.