Even if Thomas couldn't feel it, Robin probably wouldn't have been able to hide the desire that sparked through him at that. His pupils dilated, breathing momentarily shallow as his eyes followed Thomas' hand.

Robin was not a sub. He wasn't a dom either. He'd been completely honest when he told Thomas he got off on pretty much every kind of pleasure there was. But there were some things that he simply didn't get as often as others. Because honestly, the thought of a human seriously dominating him was usually laughable.

Thomas, on the other hand... Robin suddenly found himself wanting to fight him and wanting to lose. He wanted Thomas to torture and tease him, to use him, to hurt him. And though it was tame compared to some of the things Robin had hidden away, that little implement was a good start.