How unlike Rick to defer. Not shy, per se. What's the right word?

There's a sheen of sweat on his tanned skin, his green eyes fixed unwaveringly on Wheatley. His body is so firm, the way they move together is so natural. The sound emphasizes the sight, the huffs and sighs and groans in the otherwise silent room a mere frame for parted lips and shifting muscles.

Wheatley has never felt like this, so absolutely in control. The rush not just of power, but also of the other man submitting to that power.

That's it. The right word is submissive.