Clearly he hasn't spent enough time with Oswin yet - there's never a situation that requires more clothes. But that's neither here nor there, because he's given her an out, and while she can be terribly brave, hat kind of temptation is stronger than her will to keep going.

Because there's worlds of difference between ought to and want to.

"Keep saying things like that, and I'll never work up the nerve." She offers a feeble grin.