Instead of being offended, his lips split into an amused grin. She found the expression to be catching. When Draco chuckled, she fought the urge and lost. With the tension that existed between them broken somewhat, each of them relaxed, though not entirely. It was dangerous to let one's guard down in front of a potential enemy. And despite the number of times they'd called the other's name out while they were naked in bed, they were still potentially enemies. Hermione allowed herself to forget that fact briefly while she lived in his flat. That had been a dangerous move, one she wouldn't repeat.