It's efficiency, not shyness.

[... he's not entirely unused to vulgarity, spending most of his time in Umbraton as he does. Even so, there is something completely different about the way Sinsa conducts himself, something almost savagely wild. Fascinating, really. And, with the help of the pollen, enough to make his breath catch.

Fucking sex resort bullshit.]

Exactly what do you think you'll pound out of me? [a hand rises in a shrug, his lip twitching.] and why should I give you the time?