"Why," said Sirius, falling back against the rickety doorframe, and pulling Remus with him, "did it take us so long to figure this one out?" There was dust in his hair, and when Remus kissed him, he tasted old and unlived-in, like the Shack. Remus thought it should have been the other way round.
"Because it always takes us a long time," said Remus, because it always did.