"Yeah, correct me if I'm wrong but you were the guy that spoke so kindly of his ex, no?" Maybe no change of plans then, if the guy turned out to be not all that charming if you met him in person. on the other hand, Marcus could handle rough people really well, being one himself. Despite the obvious age gap he'd have no inhibitions to punch the other if it got too much as well.
Marcus grinned at his pint and nodded slowly. "Oh yeah, I get it. You were a Ravenclaw then? Better and brighter than all the rest put together?" That was Marcus talking, after he had grown out of school vendettas a little. Still he had gotten along with some Ravenclaws, he maybe would have even considered one or two his friends. Yes, even he had friends, sometimes, when he was in the mood for it.
"Ah, so you mean if this was not a time of war, people could all be tight-lipped? Maybe it never occurred to you, but some people just know what's private. And, coming to your argument of suspicion... If I don't know who to trust, why would I be open about myself and give them a way to get power over me?" Marcus, being remotely skilled with argumentations, would have probably stunned certain people, who still thought of him as a troll and totally dumb. "And some people are naturally shy. Not me I mean, but I know some." he shrugged. "Besides you never know who you're talking to, whatever I tell you could be a big, fat lie."
Marcus downed his scotch in one swallow and put the glass back on the counter. "There's nothing I want you to ask," He said, shrugging. "Just a theoretical question." he really had no idea. "What should he ask him? Why he dumped his bird? Nawh, he didn't care enough. Which side he was on? hardly a topic for a nice, relaxed evening...