The sci-fi crime-solving partners of "The X-Files" rings in the new millennium with a relationship milestone. For seven seasons, their relationship is always intense and close, but the show refuses to confirm anything romantic. As they watch the ball drop on a TV on New Year's Eve, Mulder leans over, simply kisses Scully, and then jokes, "The world didn't end." He could have been talking about the turn of the millennium and the Y2K scare, but we all know what he really means.
Season 7, episode 4