We all love the Korean variety show Running Man, but how much do we know about the Running Man members' personalities, work ethic, or even love life? Scroll down to read things you never knew about the members of Running Man!

1. Haha dated TV host Ahn Hye Kyung

Haha and reporter-turned-TV host Ahn Hye Kyung confirmed dating in 2006 and broke up in 2009. 

Haha said he used to live like a crazy man after he broke up (with Ahn Hye Kyung), and that's how he met Skull, the reggae musician. Skull and Haha collaborated on many albums together. 

2. Haha's now married to singer Byul

Haha and Byul happily married in 2012 after being friends for 7 years. They have a son, Dream, who was born in 2013.

Before they got married, Haha talked about his premarital chastity with Byul, saying he never went "all the way" with her before marriage because Byul is a devout Christian. Haha said, "I'm a bad Christian but Byul is a devout Christian, so we are going to wait until marriage."

3. Gary and Song Ji Hyo are close even when the camera's off

Running Man's Monday Couple was spotted posing endearingly at Running Man after party in celebration of the end-of-the-year SBS Awards Festival, where Gary hugged Song Ji Hyo sitting on his lap, which made fans strongly speculate if Gary and Song Ji Hyo are dating in real life. Read more about Running Man's Monday Couple here!

Watch the most recent episode of Running Man here on DramaFever:

4. Song Ji Hyo dated her boss, Baek Chang Joo

Song Ji Hyo dated CJ Entertainment CEO Baek Chang Joo in 2012 while being part of the Monday Couple. Song Ji Hyo and Baek Chang Joo broke up in January of this year. Song Ji Hyo left her agency CJ Entertainment last month when her contract ended.

4Lee Kwang Soo's video ranked as the most-watched on Hong Kong YouTube

Lee Kwang Soo's commercial ranked as the most-watched video on Hong Kong YouTube, which just proves his popularity outside of Korea. 

5. Kim Jong Kook and actress Yoon Eun Hye had a fling for the longest time

In February, Kim Jong Kook picked Yoon Eun Hye as his Ms. Right. 

Kim Jong Kook and Yoon Eun Hye's fling goes back to the early 2000s when they starred on the variety show X-Men. Kim Jong Kook mentioned his never-ending love for Yoon Eun Hye on Healing Camp in February. 

“Eun Hye's been my Ms. Right. At least when Eun Hye and I filmed X-Men together, I thought she was my woman. I wanted to protect her from other men in the program,” Kim Jong Kook said. SBS's official Twitter asked for Yoon Eun Hye to appear on Running Man, which was retweeted over ten thousand times.

6. Former member Song Joong Ki's skincare brand exports to 13 countries

Former Running Man member Song Joong Ki promotes skincare brand Laneige Homme, which exports products to 13 different countries.

7. Yoo Jae Suk and Haha star on another reality show called Infinity Challenge

Yoo Jae Suk and Haha star on another variety show, Infinity Challenge, which is more popular in Korea than abroad. 

8. Running Man members are best friends outside of the filming site

And we have selfies to prove it! Song Ji Hyo shared on Weibo photos she took with the rest of the Running Man members last month when they were in Hong Kong for a Running Man fan meeting.

9. They all love to cross-dress as ladies

But especially Lee Kwang Soo and Kim Jong Kook, don't you think?!

Is there anything you'd add to the list? Tell us in the comments below!