'Single's Inferno' contestant Kang So Yeon recently posted a Q&A video answering a few questions with fellow contestant Cha Hyun Seung.

In the video, Kang So Yeon and Cha Hyun Seung shared some of the behind-the-scenes stories that happened on the show. In addition, they revealed they had actually known each other before the show.

The two actually explained they had talked a lot while being on the island and actually talked a lot about sports and their hobbies. Cha Hyun Seung explained, "We kept talking about all sorts of activities, talking about surfing, talking about freediving..." Kang So Yeon added they also talked about the equipment they brought on the island for water activities as well. However, all the moments they were seen talking to each other were edited out because of the love lines that were being portrayed on the show. 

Kang So Yeon also revealed the two had known each other before. She explained, "We almost got to perform together. When I was a singer, Hyun Seung almost came as the back dancer." In fact, So Yeon had debuted in 2011 through the group WE, which was produced by DJ DOC but she left the group in 2014.

In the video, the two explained they both thought each other was familiar. Cha Hyun Seung explained, "She was someone I knew. I thought 'She looks like her' but it wasn't someone who was a look-alike, it was her."

Other than this, Kang So Yeon and Cha Hyun Seung shared the things that were difficult on the 'Inferno' island.

Meanwhile, 'Single's Inferno' garnered much attention as beautiful young women and handsome young men were brought together to a deserted island and are only able to escape when they find their mates. Kang So Yeon ultimately chose Oh Jin Taek as her final choice and was able to leave the island while Cha Hyun Seung was turned down by Song Ji Ah.