"Clark, things always get messy when you start throwing around the Clark-Lana triangle, and I'm speaking from experience when I say the third point always hurts." - Chloe Sullivan to Clark Kent, Bulletproof Lana Lang, Clark Kent and Chloe Sullivan have known each other since their youth in Smallville. At Smallville High School, the three became closer friends and began a relationship that has lasted throughout the series, though it has changed dramatically as the characters have aged.