Prude or Romantic?

Kirk Cameron, who stars in the upcoming film Fireproof, refused to kiss the actress playing his wife because he has committed to only kiss his wife:

“To get around the conflict, the filmmakers employed a bit of movie magic, Cameron explained. They dressed his wife, actress Chelsea Noble, like the movie’s female lead and shot the scene in silhouette.

“So when I’m kissing my wife, we’re actually husband and wife honoring marriage behind the scenes,” Cameron said as Gifford and Kotb melted from the romanticism of the moment.”

How do we as Christians justify kissing (or more?) other actors that we are not married to? Is the act not just as real on the stage or in front of a camera?