Not much is know about Chloe Sullivan's past. She attended the Smallville High School and never became a good friend of Lana Lang because they hung out in different groups. Sometime later, Chloe got engaged.

A few years after her graduation, Chloe met Clark Kent in downtown Smallville and he told her that they used to be in the same class back in their high school years but Chloe said that she didn't remember him. Clark also asked her about Lana's whereabouts and if she could help him to track her down but Chloe couldn't because she had to be somewhere else. A few moments later, Chloe's fiancé, who wore an Metropolis Police Department T-shirt, arrived and Clark offers them his congratulations but was also a little bit upset that the Chloe of his world wasn't that happy.