Please note that the world of Harry Potter belongs to Rowling, therefore I take no credit in it or the characters I use for this fanfic.
"I've missed having you around," Sirius admitted as he held a reading Remus possessively in his lap, "You know, just having you around, seeing you wander around the house, knowing you're there if I need you. Just having you in my everyday life. I know I usually complained about the fact that all you ever did was read, but after I died I would have done anything to see you read once more, my heart was aching so."
Remus looked up from the old, dusty book he was reading and tried to turn around in Sirius' lap, which made it very uncomfortable for Sirius. Still, he didn't let him go. Remus finally managed to somehow turn around and saw his own emotions reflected in Sirius' face.
Grief, hurting and pain. He knew that Sirius was telling the exact truth, nothing more, nothing less. Besides, he'd never lie to his lover.
"The books in this place must have been torture to you then," Remus sighed as he drowned in those warm, grey eyes.
"Not really. They gave me some comfort. I felt as if I was closer to you when I was reading. I used to sit like you often do, with your legs crossed. At first it was really uncomfortable, but now I can't stand sitting any other way", Remus sniggered a little at that, "I've probably read all your favourite books a hundered times already. Do you know how special you are, who got me to read? Of course you do, I tell you every day.."
Remus leaned in for a very loving kiss before he said "You're special too, you got me into mischief-making". There was a fire burning in Remus' eyes at the memories.
Sirius chuckled and placed a small kiss on Remus' nose.
"I read your letters too, guess if I was scared out of my mind when I was about to go to bed that night and found a letter lying on my bed? Merlin's beard.." Sirius shook his head at the memory. "Of course, when I saw it was from you I got very puzzled."
"WHAT? You've read my letters? But.. But how? How could they end up here?" Remus almost screamed.
Sirius held Remus tightly. "Don't ask me, this house works in mysterious ways."
Sirius looked puzzled, and again Remus found his Sirius had drifted off to a faraway place, staring out into space with a sad expression on his beautiful face.
"Siri?" Remus asked as he carefully turned around so that he had his back agains Sirius' chest again
"Yes dear?" Sirius asked as he nuzzled into Remus' light brown hair.
"Promise me you'll love me forever."
Sirius turned stiff behind Remus and didn't reply for a while, as if he was choosing his words carefully.
But when he did reply, his voice held the slightest hint of sorrow that only Remus could ever have noticed and which made Remus' brows furrow in confusion.
"I promise to love you until the day I die."
"That doesn't make sense," Remus huffed, "You're already dead."
"Then surely, it must mean that I will love you forever?" Sirius said and held Remus just a little bit tighter.