With a shrug of his shoulders, Marcus answered honestly, "I just don't like him. And the feeling is mutual."
After however many years of friendship, he could read Pansy's body language pretty well, and he dropped the topic as though it had spontaneously caught on fire. Whatever it was that was troubling her at this particular time was better left alone, rather than pressed for discussion.
He stopped himself from sighing at the thought of a house warming party - a sentiment he privately thought Greg might agree with, but he wasn't about to argue the point with Pansy. If his cousin objected, he could voice that for himself. "I'll make sure I swing by sometime, see how he's doing." And make sure that Greg knew he was welcome to raid Marcus' kitchen anytime he liked, since that was than floundering if he wasn't sure about what to do for food.