Regulus gave Bastien a very long, very considering look. The boy had proved, thus far, to be discreet, and there was something else, something about the wary tone in his voice that tugged at something, somewhere inside Regulus.
He strode toward the door, reaching across Bastien's shoulder to hold it closed for the moment, ensuring their continued privacy, as well as bringing Regulus startling close to Bastien as well. "You have an excellent point. You do deserve a..... reward, for your courtesy and consideration. I've always valued good manners."
He paused, and then, with something almost too reckless in his eyes, took a leap. "Consider yourself warned then, Bastien Queensbury. I'm not looking for trouble, but it may very well find me. Trouble follows the Black family quite doggedly."
Let the boy make of that what he would. The Blacks were a prolific pureblood family and Regulus was supposed to be dead. If he was smart enough to figure it out, perhaps he'd be useful later on. He studied Bastien for his reaction, somehow hoping he wouldn't be forced to kill the young man for his own safety.