Remus could hear Sirius clambering across the room to the door, and he found himself grinning from ear to ear before the door was even fully open.
He barely had time to take anything in before he was pulled into a hug, which he received gratefully, wrapping his arms tightly around his friend in return.
"Padfoot! Merlin, you got old!" he teased, pulling back to look at him with great amusement. It was weird- but strangely, not quite as weird as he had imagined. He was clearly the same Sirius he knew and loved.
He followed him inside, unable to keep the happy grin off his face. "This is all bloody mental!"