Kim So-yeon and Lee Sang-woo

AllKPop reported that in one of the episodes of KBS 2TV’s Happy Together 4, Kim confessed that the pair started to have romantic feelings for each other while shooting the drama, but did not officially become a couple until filming wrapped up.

Kim also fondly shared that the two of them used to have secret 15-hour dates, which she described as “more physically demanding than filming the drama”.

“I hunched to not get caught, and I thought I didn’t get caught, but it turns out people just pretended like they didn’t see us,” said Kim, according to AllKpop.

The couple married in a private ceremony in June 2017.

Park Ha-sun and Ryu Soo-young

According to Channel Korea, Ryu – known for his roles in TV series Ojakgyo Family and My Princess – proposed to the actress during a hike to Namsan, a peak in South Korea. They got married in a private ceremony in January 2017 and welcomed their first child in the same year.

Cha Ye-ryun and Joo Sang-wook

Cha Ye-ryun and Joo Sang-wook were co-stars in the 2015 MBC Drama Glamorous Temptation. Some might consider it fate that their first scene together involved a heart-stirring kissing scene with Cha in a wedding dress and Joo in a tuxedo. As it turns out, their on-screen romantic feelings translated into the real thing, and they tied the knot in 2017.

As reported by Soompi, during a guest appearance on SBS’ Ugly Duckling, the model-actress spoke affectionately about her husband, saying, “He’s the same now as when we were dating. We contact each other about 20-30 times a day.”

The couple, who now has a three-year-old daughter, loves to bond over shared interests like golfing and travelling, according to The Korea Times and Soompi.

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Choi Won-young and Shim Yi-young

The pair met while filming the 2013 TV series A Hundred Year Legacy, where they played rivals who ended up marrying each other, Hancinema reports. With their chemistry radiating off the screen, rumours of a blossoming romance had everyone buzzing. Towards the end of the drama, they revealed their IRL couple status.

They tied the knot in 2014 and Shim gave birth to their daughter in June of the same year. In 2017, the couple had their second child.

According to KDrama Stars, Choi proposed to Shim with a ring and a handwritten letter.

In Gyo-jin and So Yi-hyun

In and So have been married for seven years and now have two children together. But before they embarked on their love story, the two spent a decade as friends and even went to the same school.

In their appearance on SBS’s Master in the House, Hyun confessed that they were close friends to the point where they would openly discuss their dating lives. Before deciding to get married, they starred together as couples in the dramas Aeja’s Older Sister, Minja in 2008 and Happy Ending in 2012.

As revealed by Soompi, their relationship jumped from platonic to romantic when So suddenly proposed to her at a restaurant with, soju. The next thing they knew, they were saying their vows.

Since their marriage in 2014, the two have appeared together on SBS entertainment programme Same Bed Different Dreams 2: You Are My Destiny, where they discussed their everyday life as a married couple.

Lee Bo-young and Ji Sung

“A while after Ji Sung enlisted in the army, he called and asked to meet up when he had a day off. I went out to see him, as I thought he didn’t have any friends to hang out with. We drank a lot then,” the actress told SBS News.

The couple confirmed that they were dating in 2007, and got married in 2013 after being together for about six years. Ji reportedly proposed to Lee in Spain. They now have a son and a daughter.

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Eugene and Ki Tae-young

Eugene, former member of girl group S.E.S., and K-drama actor Ki Tae-yong shared a connection that far outlasted 2009 TV series Creating Destiny. Maybe it was the kissing scenes that ignited a spark between them, or maybe it was indeed “destiny”, because the idol-turned-actress married her leading man in July 2011.

As reported by Soompi, in his interview on the January episode of Life Bar, Ki revealed that when they were filming for the drama, the two of them were not really interested in one another, and had never considered marrying another celebrity. But years later, he proposed to Eugene with candles and roses in the house that they would live in together as a married couple. They now have two children.

In 2017, the couple and their daughter appeared on the KBS variety show The Return of Superman.

Jeon Hye-jin and Lee Chun-hee

Despite their nine-year age gap, actor Lee Chun-hee and actress Jeon Hye-jin started dating soon after filming of Smile, You (2009) ended, where they played a couple who gradually developed feelings for each other.

In a real-life fairy tale moment, Lee proposed to Jeon while serenading her on stage during solo K-pop artist My-Q’s concert. According to Seoulbeats, he started singing When Midnight Comes, then reportedly pulled out a ring and proposed on the spot.

The celebrity couple married in March 2011 and had their first daughter together the same year. In 2018, they co-starred in JTBC2’s time-slip drama Never Before Existing Day, May 32 (literal translation).

Han Ga-in and Yeon Jung-hoon

The duo headlined the drama Yellow Handkerchief in 2003. Given their obvious rapport, their relationship quickly turned romantic. They began dating in the same year, got married in April 2005, and had their first child in 2016.

According to KPop Hit, Yeon – who had been acting for more than two decades – admitted during an appearance on 2 Days & 1 Night that he fell in love with his now-wife when they were still filming the drama.

Describing the moment he realised his feelings, the singer-actor said, “She was shining even more brightly than usual. She looked so pretty. I completely fell for her then.”