Penn and Teller do not hang out with each other outside of work.

We are artistic and business partners, not primarily friends,” Teller says. “When we look at each other, we don’t think: 'Now there’s a likeable chap!

Penn says we should compare their relationship not to a loveless marriage but to that of “two guys manning a 7/11 down the street. If they aren’t best buddies what do they care, as long as the coffee machine is working and the shelves are stacked? Teller and I work together every day, but socially we go out together maybe only once a year.”

I was also at a penn and teller live q&a in nyc where they said the same thing.