Still high on his climax, Remus was mesmerised by the soft kiss and Severus' black eyes, burning into him and imprinting that simple word deep inside him. He was Severus', there was no doubt about that. Just like there was no doubt in Remus that Severus was his. The man might protest it, but it was true and had been true for Remus since the day of the full moon.
"Yes," Remus murmured and kissed Severus just as softly, ignoring the growing fatigue in his legs and how heavily he truly was leaning on Severus and the wall. Moving meant giving up this close contact and the moment, and Remus clung to it. Everything made sense like this, no words complicating and clouding things between them, only sensations ... and feelings.
Feelings he hoped he was seeing mirrored in Severus' eyes, even if it might be too big to admit openly at this stage. Too many things were uncertain and unstable yet between them and Remus knew nothing good could come from rushing things or putting even more pressure on Severus. For now it would be enough that Remus knew and was certain.
With a soft chuckle against Severus' lips, Remus had to admit one thing openly though. He was becoming too old to hold a fully grown man up against a wall while in a post-coital haze for much longer than this. Even a man as thin as Severus.
"I'm too old to hold you up much longer, Severus," he whispered.