"Usually I like to be on top, but I'm willing to negotiate with you." Rook winked at him, but didn't really allow any time to continue the flirting. He let their movements do the flirting for them--after all, there was little that inspired feelings of a sexual nature quite like being in close quarters and trying to get their hands on each other.
Alastair managed to get his hands on him early on with relative ease, but Rook would only regret it if this little exercise didn't end in sex. If asked about it, he would say that sex was the only reason he was there, but that wasn't entirely true. Not that he was ready to admit that yet, even to himself. Maybe he'd never be ready to admit he experienced feelings other than rage.
And his sex drive, obviously. "Just letting you warm up," he told him, right before throwing his upper body forward and forcing the man behind him over his head. Now, this did hurt his shoulder, and he had to rub it to ease some of the discomfort; he was definitely going to have to rub a salve on it later to make sure nothing tore, but seeing Alastair on his back while he stood above him made it worth it.