He was grinning along with Harry's assessment until the very end. He'd known Diggory, known him well, and still felt the loss of a brilliant Quidditch player and somewhat acquaintance. Katie Bell, bless her heart, had kept him well informed of the dating habits once he'd left school so there wasn't much he'd missed.
But something about the look on Harry's face near the end made him wonder. "You all right, Potter? Your face has gone past happy and shot straight to glum."