Author's Note: Deliberately left Harry's partner a mystery, so whatever slash ship you like, this'll work - especially since it's just a little one-shot. Enjoy!
Harry took a moment to gaze at the hard cock before him, admiration and pure want filling him, before he flicked out his tongue. He moaned. He leant forward and took the head into his mouth, fighting back another moan just from the feel of it resting on his tongue. Aware of the patience of his partner, he began to bob his head, slowing taking more and more of his partner's cock into his mouth, amazed just how-
Harry blinked awake, blushing. His blush deepened as he heard Ron's snore. He couldn't believe he'd- and with Ron right-
With a groan, he thunked his head back against his pillow. He rubbed his hands over his face, and realising that further sleep was beyond him, got up and padded on silent feet from the bedroom he was sharing with Ron, and down the stairs, careful not to awaken the portrait of Mrs Black.
"What's wrong Pup?" Sirius asked as the teen entered the living room. Harry's blush returned full-force. "Ah, had one of those dreams, have you?" he asked with a knowing smile, as he patted the space beside him. Pulling a face, his godson sat down beside him. "You know it's natural, right?" he asked gently.
"Embarassing," he muttered.
"I'll teach you a silencing charm, so you don't have to worry about your roommates hearing you in the future."
"That would be useful," he murmured.
"And lessen your embarrassment?" he asked lightly. The teen waved his hand back and forth. "Close your curtains, they'll never know," he spoke sagely, causing his godson to laugh softly. "Do you guys not talk about stuff like this?" Harry shook his head. "Hmm, you must not have someone like me to start the conversation off," he murmured.
"Definitely not," he agreed and his godfather wrapped an arm around his shoulders.
"Anything you want to ask me, while we're on the subject?" he asked, giving his godson's shoulders a squeeze.
"Anything you want to tell me?" he shot back.
"So many things," he replied solemnly, while grinning.
"Go ahead."
His godfather startled. "Really?"
"I'll stop you if I can't handle it Pads," he replied with a smile.
Sirius let him go, so he could rub his hands together eager, then opened his mouth…