Sirius always kissed Remus with his eyes open. He couldn't help it, Remus was beautiful when he was being kissed, and Sirius wanted to see him. Remus had these long eyelashes, they fell upon his face like the shadows of angel wings. Remus' eyes were always closed. There was a scar upon one of the lids, tiny and pink. It seemed to glow in any light.
Sirius didn't like to kiss Remus in the dark. Then he couldn't see him. He couldn't see the long slender fingers on his own neck, or the way Remus' nails shone on his hands. Remus always kept his nails clean and nice, never biting them like Sirius did. Or leaving them with dirt under them like James. They were always pristine.
Remus always said that it felt sort of strange, to be watched while he was being kissed. But he didn't mind it, he said, because it made Sirius happy. Remus liked to say that he wasn't sure why Sirius would want to look, and Sirius would drag him to a mirror and list his good attributes.
There were times when James would watch the two of them performing these kinds of rituals curiously, without saying anything. It was the one thing James wouldn't laugh at. He knew that Remus was to Sirius as Lilly was to him. James said that he wished Lilly would love him like Remus loved Sirius. Remus and Sirius would then smile and tell James that she would, eventually.
Remus like to close his eyes when he kissed Sirius. He liked to simply feel, and taste Sirius, instead of seeing him. Not that there wasn't plenty to look at. But Remus fealt this impulse, he had to close his eyes. They dropped on their own. Then he could feel Sirius' hands, usually one on his waist and one on the side of his face. He could feel Sirius' tongue invading his mouth, though it was a welcome invasion, memorizing.
Once in a while Sirius' hands liked to wander, liked to touch Remus more intimately. They Both enjoyed that, Remus would squirm, sometimes more than usual just because he knew Sirius like it. Sirius would fondle and play, his fingers running around the flesh. Every time he acted as if he was trying to memorize the plains of Remus' body.
Sirius had never gone all the way with Remus though, Remus wouldn't let him. He said he wouldn't do anything like 'that' until he was married, or the equivalent. However, Sirius was happy just to kiss him. And always to kiss with his eyes open.