While kissing attractive k-drama actors can seem like a fun way to make a living, it can occasionally also be painful. Sometimes in an attempt to film a realistic kiss scene, k-drama and k-movie actors get carried away.

Han Hye Jin, who currently stars in the drama "One Warm Word," was a recipient of such a kiss in the upcoming film "When A Man Loves." Her co-star Hwang Jung Min was supposed to be a rough man who fell in love for the first time. He didn't have a lot of experience with kisses. So when his character kissed her, the results were painful.

Of their passionate kiss scene, he wrote, "I remember that we both felt awkward and didn't know what to do. The kiss was so intense that my teeth hit Hye Jin's lips and made them bleed."

It seemed appropriate for the story but it was painful for the actress.

Something similar happened when Lee Chung Ah and Jung Il Woo were filming the comedy "Flower Boy Ramen Shop." They were filming a scene in which he finally realizes his feelings for her. He took off his motorcycle helmet and pulled her to him, then forcefully kissed her.

But as the romantic as the scene may have appeared to viewers, for Lee Chung Ah it was just painful. Jung Il Woo's kiss was so forceful 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."

Getting caught off guard during a kiss scene can also be a recipe for disaster but sometimes it works out well.

Things could have turned out badly when Lee Min Ho kissed Park Shin Hye during one kiss scene in "The Heirs." No one warned Park Shin Hye that the couple would actually kiss and she was startled when their lips met. But although his kiss was forceful, it was also gentle. She did not resist and carried on kissing.

"I did regret that no one told Park Shin Hye beforehand," said Lee Min Ho of what is now considered the drama's best kiss. "Usually actresses are given an idea of what will happen. So I think Park Shin Hye was caught off-guard by how it played out."

While no one wishes that their favorite actors suffer during kissing scenes, fans are grateful that the scenes turned out so well.