Choi Woong (Choi Woo Sik) may seem nice, but he's a little despicable. In "Our Beloved Summer" episode 3, he uses his skills to his advantage and annoys his ex-girlfriend Kook Yeon Soo (Kim Da Mi) to bits.

'Our Beloved Summer' Episode 3: Kim Ji Woong Persuades Choi Woong and Kook Yeon Soo To Film Again

Previously, ex-lovers Choi Woong and Kook Yeon Soo met after their messy breakup five years ago.

Kook Yeon Soo comes into Choi Woong's life once again for a favor which the latter arrogantly declines, for obvious reasons that he hasn't moved on from his ex-lover yet.

Their high school documentary filmed 10 years ago unexpectedly blew up, dominating the trending lists everyday.

Because of this, their friend Kim Ji Woong (Kim Sung Cheol), a documentary director who is tasked to take on a film involving the two ex-lovers, makes a move. Because he knows the two like the back of his hand, he persuades the two, little by little without them knowing, in doing another documentary film.

This also gives Choi Woong an idea on how to "get back" on his ex-girlfriend who broke his heart into pieces.

Choi Woong Declares Immense Hatred For Kook Yeon Soo

In episode 3 of the highly loved drama, Choi Woong listed down all the things he hates about Kook Yeon Soo.

He describes his ex as a "selfish, self-centered and immature person."

The third episode highlights why Choi Woong absolutely hates the girl, and why he loved her so much.

Despite all the cruel traits Kook Yeon Sok has, Choi Woong shares how his ex-girlfriend shows her adorable charms and affection to him, a side which no one knows about except him.

The two shared many years of their lives loving each other, but like many other beautiful things, they came to an end.

IN CASE YOU MISSED IT: 'Our Beloved Summer' Episode 2: Kim Da Mi and Choi Woo Sik Refilm Their High School Romance Documentary

Choi Woong saw like the world crumbled in front of him after the love of his life broke up with him, saying that he is only thing she can throw away out of her life.

He hated it, and he still does. He definitely hates how Kook Yeon Soo looks so fine even after their cruel separation.

In hopes to avenge his broken heart, he accepts Kook Yeon Soo's collaboration offer and also agrees to Kim Ji Woong in filming a documentary once again.

Kook Yeon Soo's Hidden Secret

While episode 3 hasn't revealed real reason of their separation yet, it isn't entirely true that she didn't feel anything after the breakup.

Because she grew up poor and she always had the mindset to strive more in order to be successful, she took her feelings aside and worked hard to achieve success.

Unbeknownst to everyone, she uses her busy roster to keep her mind free from thinking about Choi Woong.

ALSO READ: 'Our Beloved Summer' Episode 1: A Brief Glimpse to Kim Da Mi and Choi Woo Sik's Love-and-Hate Relationship

However, in the middle of the night, she locks herself inside the bathroom, letting the water flow from the sink as her tears fall down to her cheeks.

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Written by Elijah Mully.