"Ah but the words dare never left my lips until you brought it up." He teased, because Sirius always was good at shirking responsibility whenever possible, especially when it came to things like this. "You know that wouldn't be the first time someone has told me that, though I have to seriously doubt any claim that you've been perfectly well behaved before I came along, after all I've only known you all of 20 minutes hardly long enough for my bad influence to have so thoroughly corrupted you."
He chuckled and shrugged. "When it's me, likely nothing." He teased. Though he didn't imagine he'd be showing up at some poor girl's flat unannounced tonight.