Sin - 4/50 for the OTP Bootcamp Challenge

There was something delightfully sinful in what they were doing, thought Remus as Sirius pulled his cloak off. It hit the floor with a soft thump, but Remus couldn't keep track of it after that.

The dormitory door had been shut and locked, the room theirs to mark and use.

Warm lips found the pulse point on his neck, teeth scratching and pulling there. His breathing sped up.

They shed the rest of their clothes quickly and efficiently, finding the points on the other that they knew produced soft sighs and throaty groans. Right underneath his ear, Sirius had a spot that, when caressed, brought forth the most heart-melting sounds ever heard.

Remus pushed up against Sirius, needing and craving some contact.

However, all of a sudden, Sirius stopped everything. Knowing Sirius to be the type of person that was practically made for multitasking, Remus was curious.

"What?" He asked, sitting up and following Sirius' eyes.

"You have got to be kidding me," muttered Sirius, reaching under the pillow. James' pillow, to be exact, on James' bed. The hand re-emerged with a burgundy coloured notebook on hand.

Remus had to let a laugh out, "James has a diary?"

They guffawed, laughing so hard they fell down on top of each other, a mass of flesh that shook with mirth. Remus wiped tears from his eyes, and then looked slyly at Sirius.

"Are we going to read it?"

Sirius made a show of acting insulted, complete with disbelieving hand movements and a "that-sort-of-thing-is-beneath-me" look on his face. Then, "Of course we are, who do you take me to be?"

They flipped open the book, expecting James' chicken scrawl. Instead, they were met with loopy handwriting that was neat and even. Speechless for a second, they simply stared at the page.

Signed, Lily.

"Oh. My. God." Remus breathed. "Is this-"

"It is!" Sirius exclaimed. "Sweet Merlin."

"Lily was here!" Remus finished. "When- How- I thought..."

Sirius shrugged, looking contemplative. "Moony, we're faced with a dilemma."

Remus looked confused.

"We can either continue the excellent snogging... Or go torment Lily and James - it should be much fun."

Remus tried to look upset, sagging his shoulders as though deeply offended that Sirius would choose anything over his lips. Then he smiled and said, "Let's go, it's like you don't even know me!"

They scrambled out of James' bed, diary in hand, and nearly reached the door before Remus called out again. "Wait," said Remus. Sirius whirled around, a look oin his eyes that betrayed his worry that Remus would decide not to go through with it.

A grin lighting up his features, Remus said, "We should get dressed first, shouldn't we?"

"I dunno, Moony. You look pretty amazing like that, if you ask me."

Remus smirked and playfully smacked Sirius. "Come on, at least put your cloak on, then."