Remus flickers something of a smile at the other boy at that image. He's fairly certain that regardless of how much Sirius eats, and how much he regrets eating that much, his seemingly magical metabolism will take care of it and he'll look just as infuriatingly good as he always does. Still. He can't resist a little rub.

"Careful you don't ruin your girlish figure, Pads," he says, before sitting closer once more. "Though I suppose you can afford it this time. You could do with a little more meat on you. Especially if you're planning to go parading about half-naked as you say."