"I should hope so!" They can't bite back their much less dignified grin at his overdramatic tone, amused despite themselves. "Why, the gossip revolving the two of us here must be scandalous enough as it is!"

They're breaking their rule, a little bit, or bending it some - the rule where they don't indulge in this sort of witty repartee. But it's not their fault this interaction has been atypically enjoyable.