Coy
WordNet
adjective
(1) Modestly or warily rejecting approaches or overtures
"Like a wild young colt, very inquisitive but very coy and not to be easily cajoled"
(2) Showing marked and often playful or irritating evasiveness or reluctance to make a definite or committing statement
"A politician coy about his intentions"
(3) Affectedly modest or shy especially in a playful or provocative way