Is there a polite, non-awkward way to clarify if an outing is a date or not?

A friend of mine just asked to see a movie with me. A few days ago, his facebook said he had a girlfriend, now his relationship status is hidden. I accepted before I knew this and now I’m not sure if it was just meant to be a movie with a friend or a date.

So, collective, I turn to you. Is there a non-awkward way to ask him if he intended this to be a date?