Sirius arched an eyebrow when a man joined him from where he'd been watching the festivities. He'd spent some time with James after they'd arrived, but they both had people they wanted to talk to at some point he suspected. And for a few moments at least Sirius had found himself on his own, up until now of course.
"That is me." He grinned easily, he tried to place the man, but found he couldn't quite manage it, and decided this was going to be one of those time where ti was someone who knew him but he'd never met, at least not been introduced to him. The red hair at a family function like this of course meant he was a Weasley but beyond that Sirius wasn't sure. "And you'll have to forgive me, since I am not sure we've met yet - at least not that I remember." If he were being proper he would have held out his hand, but he hadn't missed the look in the man's eyes and decided he'd just stick with verbal pleasantries for now.
"Interesting news?" He asked with a small smirk, "I've been hearing nothing but interesting news since I came back - but if it's interesting to you then that must mean it's something good."