At a recent press conference for the completion of "She Was Pretty," Hwang Jung Eum spoke about her kiss scenes with Park Seo Joon. She praised his acting but explained that the kissing was perhaps not as romantic in real life as it looked on the screen. That's sometimes the case when filming k-dramas.

"Park Seo Joon's lips are a bit thick," she said. "I told him that I would not do anything when he kissed me because Hye Jin is an innocent character."

He made fun of her. After kissing her he told her that it was like kissing a wall. At least it looked like they were having fun.

Sometimes a kiss scene may be fun for the first few takes but it gets to be work after a while. When 2PM's Taecyeon filmed a kiss scene with Suzy Bae for "Dream High," it took eight hours to film.

"When I filmed that scene with Suzy, it was my first kiss scene so I worried how I should go about it," said Taecyeon on the TV program "Taxi." "We ended up filming that kiss scene for close to eight hours."

And you may have to kiss for hours in all kinds of weather. That's what happened to Kim Jae Joong when he was filming the drama "Spy." While he was kissing co-star Go Sung Hee, it started to snow.

"The wind chill was almost negative 20 degrees Celsius and it started snowing all of a sudden," he said.

The director could not have asked for a prettier setting but the conditions made it harder to focus.

"The picture was really pretty," said Kim Jaejoong. "The snow fluttered as if we had planned it. Then huge snowflakes started to fall, followed by rain and then it turned to hail."

And the person you are kissing can get carried away. That's what happened to Jung Il Woo when he kissed Lee Chung Ah in "Flower Boy Ramen Shop." They were filming a scene in which his character finally realizes his feelings for her. He takes off his motorcycle helmet and pulls her to him, then kisses her so hard that his teeth cut her lip.

"I started seeing stars during that kiss scene," said Lee Chung Ah. "I could taste the blood but because the cameras were rolling, I didn't stop filming. After we stopped, I saw that I was bleeding."

And sometimes directors like to surprise actors with kiss scenes just to get a dramatic reaction.

Park Shin Hye was really surprised when Lee Min Ho kissed her in a scene for "The Heirs." The director had not warned her.

"I was really surprised. While we were shooting the scene, I grabbed Lee Min Ho's clothes. That's because I was so surprised, and you can see it in the shot, too."

They were shooting the scene for the first time, and the director said, "This time, you're going to really kiss."

At that Park was caught off guard and the kiss just happened.

"In the notes, it says 'grabs and pulls her chin towards him,' and when he actually grabbed my chin and pulled me in, it surprised me."

It did make for a great scene.