How to turn a 16 year old boy on?

okay well, were really flirty and everything, and i want to be a little bit of a tease.... so far hes mentioned that i have a nice ***, and he likes me.. and he always calls me beautiful, but i want him to like want me? in every way.. so what are things i can do to turn him on but arent way to obvious, and dont say anything, otherwise i wouldnt ask....?