Natalie (2010)

Mi-ran, a beautiful dance student, becomes the model, muse and lover of her philandering sculptor-professor Jun-hyuk. When she realizes that she will never be more than a model for Jhim, she leaves him for her stalkerish fellow student Min-woo. 10 years later Min-woo and Jun-hyuk reunite as art critic and interviewee, and they compare their conflicting memories of Mi-ran, who seems to have since disappeared.