Arcturus couldn't imagine why it would be in any way surprising that his older alter ego had a wife. Unless it was the notion that a married man would come to a place like this, in which case his suspicions had been correct, but if the owner was going to make moral judgements he was probably in the wrong sort of business.
He laughed at the question. 'My wife doesn't visit this sort of establishment. It isn't exactly proper for a lady to frequent a public house.' Or whatever Decadence really was. Surely that much must have been obvious.
It might have been noisy, but Arcturus picked up very clearly on that Mr Morningstar. It was that chap from the telephone network, the one who had discouraged him from being overly sentimental. Not a proper gentleman, then, but all the same Arcturus was glad of his disguise. He'd rather liked having Mr Morningstar's good opinion, and would certainly lose it if he were found smoking and drinking in a place like this.
He gave the man a knowing look, but didn't mention the fact that his identity had been revealed. It simply wouldn't be polite to. Instead, he tried his drink. It was a touch too bitter for his liking, and didn't compare at all to butterbeer, but he didn't grimace. He gave his companion a nod. 'Very good.' It was probably better for him not to say too much, now that he was dealing with someone he knew and not some random muggle.