Jung Hae In Becomes the ‘Perfect Boyfriend’ in New Romance Drama ‘Love Virus’

FNC Entertainment confirmed on September 2 that Jung Hae In will star in the new original drama, which pairs him with Shin Se Kyung.

“Love Virus” follows a couple who have been together for nine years and have never dated anyone else. Before getting married, they make an unconventional decision: take a temporary “break time” and meet other people so neither enters marriage wondering what they may have missed.

Jung Hae In Plays a ‘Hexagon Man’ With Almost No Weaknesses

Jung Hae In takes on the role of Ha Do Woon, a talented lawyer and the longtime boyfriend of Kang Chae Rin, played by Shin Se Kyung.

Do Woon is described as a classic Korean “hexagon man” someone considered well-rounded across nearly every desirable category.

He has the looks, career, athletic ability and determination to match. Once he sets a goal, he is the type of person who keeps going until he achieves it.

That apparently perfect exterior, however, is about to be tested by an unusual relationship experiment.

After nine years with the same person, Do Woon and Chae Rin agree to date others before marriage, creating a new kind of tension inside what had long been a stable relationship.

What Does ‘Hexagon Man’ Mean in Korea?

The term “hexagon man” has become a popular way in Korea to describe someone who appears strong in multiple areas at once rather than excelling in just one.

Depending on the context, the “six sides” can include qualities such as appearance, career, financial stability, personality, family background, education or physical fitness.

Ha Do Woon is essentially written as the boyfriend who seems to check every box.

That makes the central premise of “Love Virus” even more intriguing: if someone seemingly has the perfect partner, why risk the relationship by dating somebody else?

Jung Hae In Returns to the Genre That Made Him a Romance Favorite

The role also brings Jung Hae In back to familiar territory.

Over the years, the actor has built a strong reputation through emotionally grounded romance dramas including “Something in the Rain,” “One Spring Night” and “Love Next Door.”

His performances have often focused on quiet affection, longing and realistic relationship dynamics rather than exaggerated melodrama, earning him a reputation as one of Korea’s most reliable romance leads.

In “Love Virus,” however, that familiar image comes with a twist.

Instead of falling in love for the first time, Jung will play a man who has already spent nearly a decade with his partner only to deliberately introduce uncertainty into their relationship before marriage.

A Different Kind of Challenge for Jung Hae In

The drama will allow Jung Hae In to portray both the familiarity of a long-term relationship and the emotional disruption that comes when its rules suddenly change.

His character begins from a place of security.

He has a stable career, a longtime girlfriend and a clear path toward marriage. But the couple’s decision to take a break and explore other relationships could force him to confront jealousy, temptation and feelings he has never needed to examine before.

That shift is expected to become one of the central emotional arcs of the series.

Jung Hae In Continues His Romance Streak

Jung Hae In has also continued expanding his acting range beyond romance, taking on comedy, action and noir projects alongside more emotional character-driven roles.

Most recently, he appeared as Jang Tae Ha in the Netflix series “This Damn Love,” where his devoted approach to romance once again drew attention from viewers.

“Love Virus” now gives him another opportunity to reshape that romantic image through a character who looks perfect on paper but enters a relationship experiment with potentially unpredictable consequences.

With Shin Se Kyung opposite him, the drama is already drawing interest for both its leading pair and its provocative premise.