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.
Remus couldn't recall much of the battle. He knew that he and Tonks had fought at different ends of the castle, and he remembered green flashes flying all around. He had seen almost as in slowmotion when a green flash had made it's way towards him, and he hadn't had the time to duck. In this moment he knew he'd meet his precious Siri again.
Then everything had gone black.
When he woke up after that he felt light at heart. He hadn't had the chance to open his eyes yet, but he felt like he was lying on a bed or something very bed-like.
Suddenly he was struck with a terrifying thought.
What if he hadn't in fact died?
What if he was at St. Mungos, severely injured but still alive?
He felt his heart beating faster from the fear.
That was when he felt fingers on his left hand. The touch was gentle, it was almost not a touch at all, more like a light stroke. His heart made a little jump in shock and maybe even a little in hope. The only one who had ever touched him like that was Sirius, and the fingertips brushing agains his hand felt alot like Sirius'. Remus decided the best thing to do was to open his eyes, and so he did.
Slowly he opened his right eye, and sure enough, there Sirius sat. Those grey eyes stared lovingly at his face, and there was a deep longing in those eyes. Something told Remus that Sirius had missed him as much as Remus had missed Sirius.
Remust felt a tear slowly started to make it's way down his chin and let out a sigh of relief as Sirius cupped his cheek with his hand and brushed the tear away with his thumb. Remus wanted to touch Sirius properly, to make sure it wasn't just a dream, so he sat up and intended to hug Sirius, but somehow he ended up just sitting there instead, gazing at his beloved who he thought he had lost forever. He wasn't sure what to do, he wasn't sure if it was okey to kiss him again, so as always, Sirius made the first move and drew him in for a soft kiss full of passion and longing, and it almost screamed of "I love you". And Remus wanted to scream "I love you too".
When Sirius withdrew after a long tongue-fight Remus finally noticed he was actually sitting in the red and gold decorated bedroom that had been Sirius' at the Grimmauld Place. This made a ton of questions appear in Remus' mind, but before he could ask anything he found himself glued to Sirius' mouth again, so he wasn't really complaining. After almost two years with death between them and twelve years when one of them was locked up in Azkaban, they really needed this. Remus had missed it as much as he would miss air in space.