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During a recent broadcast of SBS 'Running Man', Lee Joo-yeon unexpectedly mentioned Yang Se-chan's idol ex-girlfriend, leading to a discussion about their past relationships. When Lee Joo-yeon expressed her desire for love after prioritizing work, the cast members attempted to create a love line between her and Yang Se-chan. However, Lee Joo-yeon shifted the atmosphere by stating she had heard about Yang Se-chan's past idol girlfriend.
Yang Se-chan responded by claiming he also knew about people Lee Joo-yeon had dated, turning the lighthearted love line into a playful exchange about their past romantic histories. This is not the first time Yang Se-chan's idol ex-girlfriend has been mentioned, as HaHa previously brought it up on a YouTube channel, though no names were disclosed. Lee Joo-yeon, a former member of After School, reunited with Yang Se-chan on Running Man after eight years.
Bloggers interpret this incident as an entertainment-driven 'past love line' rather than an actual romantic development. They caution against speculating about specific idols as Yang Se-chan's ex-girlfriend, as no confirmed names were revealed. The situation also brought renewed attention to Lee Joo-yeon's past dating rumors with G-Dragon.
