Oh, deliberate and wonderful. The human body, with no help at all from lessons or even hearsay, was able to move in the way of pleasure. Swallowing, Severus moved as Remus did, hips swaying and grinding into hips.

"Merlin," he whined, hot and moist breath in his ear. "I've never wanted..."

He fell silent, if only because Remus's knee was starting to make him almost painfully hard. He moaned, pushing downwards in delight. Fingers trailed down his ribs, catching on the lowest one.