Gluttony - Ron
He was gone. If he was coming back, he would've done it by now, wouldn't he?
Anyway, it was a good opportunity to get a decent meal. For almost a year now, Ron had been either unable to eat much or Hermione had not found much that was edible. But now he was in the middle of his seventh feast in seven days! Blimey it felt good!
As the main course disappeared to be replaced by pudding, he helped himself to everything he could reach. He turned to Hermione, about to ask her to pass the treacle tart, when she noticed her carving a random pattern in her own pudding with a steak knife.
Knowing something was wrong, but deciding to wait until later to talk about it, he tucked into dessert. A few minutes later, however, he couldn't resist looking back at his right and noticing that Hermione was still absentmindedly dragging cutlery through her food.
Before thinking about it, and without realizing his mouth was still full, he asked "Er-my-nee, wuzzrong?"
She glared up at him, disgusted by the bit of pudding that had escaped his mouth and now clung to his chin. After about a second, she sighed and left the table without a word.
Ron looked sadly between his plate and his girlfriend, trying to make the toughest decision he'd had to make since You-Know-Who died. Well, the only one, really.
He sighed and stood to leave after Hermione, making a mental note to eat twice as much dessert tomorrow to make up for it.