[Spoiler] "Discovery of Romance" Eric Mun vs. Sung Joon, the fight for Jung Yu-mi

Eric and Sung Joon ended up in a physical battle.

On the fourth episode of the KBS 2TV drama "Discovery of Romance", Han Yeo-reum's (Jung Yu-mi) ex-boyfriend Kang Tae-ha (Eric Mun) was aware of her current boyfriend Nam Ha-jin (Sung Joon).

Tae-ha worked with Yeo-reum and dropped her off at the hospital Ha-jin works at and saw Ha-jin and Ahn Ah-rim (Yoon Jin-yi) hugging each other. He thought Ha-jin was cheating on Yeo-reum and mentioned what he saw to him while they were playing pool.

Tae-ha told Ha-jin, "Why don't you clear things with Yeo-reum before she finds out? Or stop seeing her. You go on blind dates and you have another woman".

Ha-jin asked, "You like Yeo-reum don't you?" and Tae-ha said, "What if I say yes?"

Ha-jin got angry and kicked Tae-ha on the spot. Tae-ha responded by pinning him down on the pool table and hitting his face.

Han Yeo-reum arrived and saw her ex-boyfriend hitting her current boyfriend so she smacked him with a pool stick.