This scene is rated NC-17 (adults only). It includes explicit male/male sex. If this is what you came for, scroll down. If it isn't, hit the Back button.
Another outtake from "The Familiar" by Resonant Potter blinked up at him in the candlelight, eyes flicking down to his nightshirt's open collar and back up to his face, and then gave him a heavy-lidded smile that made his chest go tight. He felt his own eyes fall half shut.
He was still holding the spectacles. He shoved them in the general direction of the nightstand. Then, very slowly, he brought his hand up and brushed down Harry's cheek with the backs of his fingers.
Harry's movement was so slight that Snape couldn't see it, but he could feel the increase of pressure against his fingers as Harry leaned into the touch. Just enough. He made the journey again, with his fingertips this time.
Harry closed his eyes, slowly, and opened them again. Holding Snape's gaze, he moved back, away from Snape's hand. Snape's breathing stopped for a moment, and then caught again as he understood, and he stretched out on the bed.
Harry was looking at him still, eyes very dark in his pale face. Snape kissed him.
Harry's mouth was soft. Snape tasted the moist inner surface of Harry's lower lip, and Harry made a small sound and licked a stripe all the way around the edges of Snape's lips, making him shudder.
When Snape pulled back, Harry's eyes were open, watchful. Snape held his gaze and undid the top button of the shirt -- one of Snape's own, heavy and white, with thin shell buttons whose edges were sharp against his fingertips. Harry's belly quivered as Snape undid the last few buttons. Snape ran his fingers up once, over belly and breastbone and throat and jaw, and then back down again to unfasten, backwards, the zip and hook and hidden button of his favorite gray trousers.
Harry caught his hand. Turned it over, unbuttoned the cuff of his nightshirt, and bestowed a long, soft kiss to the inside of Snape's wrist. Snape sighed, then divested himself of the nightshirt and shorts with breathless haste. Nude, he lay down again, and Harry stroked him from ribs to hip and then tugged him into another kiss, fingertips stroking just at the base of his spine.
Snape pushed back the shirt collar as far as he could. His mouth followed his hand out along Harry's collarbone to the curve of his shoulder. Harry made an impatient noise and stood to shed his clothes, exposing the vulnerable line of his spine, the pale swell of his buttocks. When he turned around, Snape held out a hand, and Harry lay down in his arms.
The feeling of Harry's skin against his was incendiary. Harry rolled half on top of him and kissed him, slow and deep, kissed his eyelids and his temples and his throat, then raised his head to look into Snape's eyes as his hand moved down over Snape's chest and belly to close around his cock.
He watched Harry's flushed, hot-eyed face as Harry worked him with slow certainty, winding him up to an almost unbearable pitch without ever altering speed.
Snape kept his eyes open as long as he could, until the pleasure grew too intense and they fell shut as he gasped and climaxed over Harry's still-moving fist. When he opened them again, Harry was still watching him. Snape pulled his head down.
More kisses, drugging and sweet, and Harry's warm scent all around him, mixed with an herbal whiff of the sleep draught and the familiar scents of his own sheets, his own clothes. Harry's cock dragged wetly over his hip, and he held his hand for it, let it paint runes on his palm, then closed his fingers and drank Harry's cry into his mouth.
Harry jerked his hips down, forcing his cock into Snape's tight grip and his tongue into Snape's waiting mouth over and over. When Harry raised his head to breathe, Snape licked him, tasting fresh sweat on his throat, his jaw, and Harry's hips jerked forward. "Severus," he whispered, and came.
Harry's eyes opened sleepily and looked into Snape's for a long moment as his breathing slowed, and then Harry reached up and smoothed a lock of hair off Snape's cheek. Snape turned his face into Harry's hand and kissed it, and Harry gave him another half-smile.
The candle guttered and went out as they lay side by side and kissed, shallowly, again and again, as though they would never stop.