The Vampire Diaries featured several unexplained plot holes, but this smart theory explains one of them. Adapted from L.J. Smith’s novels, The Vampire Diaries followed two brothers, Stefan and Damon, who were in love with the same girl. Throughout The Vampire Diaries eight seasons, it created several plot holes, and even in its ending, it failed to answer all of them. It has been several years since it wrapped up, but they remain a favorite topic of conversation. While the show did provide some lore reasons behind the supernatural creatures in the series, some things still need further exploration.