Moaning deeply, as Remus closed his teeth around his flesh, and flames of lust and pain and something that felt so very much like happiness shot through his body, Severus could do nothing but confirm the promise he knew was implicit in his wordless request. 'Yours,' he said, hoarsely, pressing Remus' face hard against his neck, as if to encourage the wolf to bite harder, to make sure the mark would stay for a long time. 'Want you too,' Severus whispered, gasping at the pain, 'to be mine.'
He had no idea where the words came from, he was not exactly known to be a warm and caring man, and definitely not known as a tender lover who whispered soft words in the ear of... anyone. But this, the safety Remus offered, contradicting the danger of the werewolf, made Severus able to let go a little of his hard won coldness. He had so much passion inside, and he had nowhere to release it, except for as a spy and a warrior. Now he was offered something else, something as difficult to handle: to face his own fears and have more pleasant things in return: love. If he could fight himself he could earn love, or so it seemed when the wolf spoke.
Severus buried his fingers in Remus' hair and let out a needy moan.