The dominant way Remus just pushed him down and held him, without even as much as straining himself the least, aroused Severus to an extend he hadn't imagined possible. Then Remus - or was it the beast - decided to lick and taste and suck, and Severus could do nothing about it but lie back and enjoy his lover's caresses. He moaned deeply and spread his legs to let Remus have more room.
Severus had his hands buried in Remus' long, soft hair that fell over his face, hiding what Remus was doing, although Severus wasn't in doubt when Lupin's hot mouth encased his cock, and a delicious suction began. Severus groaned, inadvertently trying to push up, although Remus' hand prevented him. Severus didn't know whether the wolf had some preternatural strenght, or if it just felt that way because Severus was weak, lost in the pleasure. He played with Lupin's hair, caressed his neck, everywhere he could reach, whispering sweet nonsense to the wolf, encouraging it to be harder, rougher, take more.
He moaned Remus' name, encouraging. 'I want you, wolf. Inside me, please' Severus voice was low and intense, and all he wanted right now, apart from what Remus already gave him, was to make it final, to consummate. 'Take me,' he urged, as he spread his legs shamelessly, not knowing where this wantonness came from. 'Fuck me, Remus!'