Justin isn't marrying Jessica for her planetary hoop, or her acting abilities - no - he's marrying her for her brain. He must find it empowering.
According to director Stephan Elliot, Jessica's intellect is a thing of marvel, and something that surprised him daily while filming Easy Virtue in London: "We were staying in a hotel waiting for a writer and I suggested we go for a walk in the park. There in Hyde Park was this little ferris wheel that they just put up for a little funfair but Jessica goes: 'Oh it's the London Eye. I thought it would be a bit bigger.' She had no f**king idea whatsoever."