Bewitching Attraction (2006)

Eun-sook, a captivating textile professor, holds considerable influence over the university's male faculty, a result of her intimate relationships with many of them. A member of an environmental group, her world shifts when Suk-gyu, a well-liked comic book artist, joins. This sparks jealousy in Mr. Yoo, another group member who fears losing Eun-sook to Suk-gyu. It's revealed that Eun-sook and Suk-gyu have a shared, painful past from junior high: Eun-sook was the girlfriend of Suk-gyu's older brother. After their affair begins, the brother’s best friend dies in an accident involving both of them. As Mr. Yoo investigates their history, will their secret be exposed? And can they rekindle their connection?