When an attractive female star visits Late Show With David Letterman, we know the drill: She and Dave will shower each other with compliments, hug and kiss, flirt like crazy, and pretend that he's not a cynical old dude and she's not just there to plug her latest movie. And with some, like Julia Roberts or Drew Barrymore, you can sense some actual affection between talk-show host and talk-show guest -- even though it's clear that the relationship will never continue beyond the chilly confines of the Ed Sullivan Theater.
But we have to admit, we weren't quite prepared for Will Smith's visit with Dave last night. Not only did it include copious smooching (on the cheek, anyway), but the joking banter about the two of them as a romantic couple went on far longer than either of them appeared to expect. Check out the video above to see why Will thinks Dave will "never go back." (And be thankful that they spared us all the potential Hancock jokes.)