Ron knew from the morning that this wouldn't be his day. He was still upset over Dom's bite, and how helpless he felt over it and his trainees' (and James's!) curses, how he couldn't have done anything. For some reason it looked like everybody had forgotten what has been happening to the family and everybody close to them, and it angered Ron like little else.
For a while everything went along fine and he almost thought he'd been wrong, until he got the news of Jameie's and Sirius's relationship. He'd helped set everything up and catching up with some others, but then he caught sight of Sirius and sidled up to him.
"Sirius, my good man," he said casually, but his eyes were cold. "I've been hearing some interesting news."