"Wow, that's... absolutely horrifying." She is insulting his taste with a bright smile and a laugh, but that sure sounds disgusting. And she's definitely going to snog him after he eats that.

"Sausage, spinach, and mushrooms. We can get a half with each." And then they won't have to eat the other's disgusting toppings and still enjoy their own. Sure they could split a full pepperoni but why would they?