The Nexus is full of stress and crisis. Being stuck, getting LOLed, they don't put people in the best mood. Of course being at home where he's comfortable is going to be different. Or maybe he just finds her easier to deal with when she's dressed more demurely.

She does love that smile. Especially when it's aimed at her. "I would like that. But only after I get to show you something of my home. New York is a beautiful city, and..." there might not be much time "it's only fair. Please?"

How can he say no when she's asking so nicely?