Smallville's greatest love story is arguably between Clark Kent and Lana Lang. After six seasons of keeping his secret from his high school crush, Clark tells her the truth only to watch her leave not long after season 7. Their relationship was upended for a few reasons, both story-wise and professionally by the actress that portrayed Lana, Kristin Kreuk. Although this made the inevitable storyline of Lois and Clark possible, Lana's forced departure warrants better closure for her character's love story with Clark.