'Knife and Flower' co-stars Kim Ok Bin and On Joo Wan are the next rumored onscreen-to-offscreen couple.

SEE ALSO: GOT7’s Youngjae mourns the loss of his dog Coco

According to an exclusive by Sports Hankook, Kim Ok Bin and On Joo Wan met through the KBS 2TV drama 'Knife and Flower' and gradually became a couple as they shared advice on acting with each other while filming. It's reported that Kim Ok Bin's open and carefree personality helped them to grow close.

An entertainment insider stated, "On Joo Wan, who is four years older than Kim Ok Bin, is said to especially take care of Kim Ok Bin. The two actors both have good personalities, so they are being congratulated as being a good fit for each other."

"In the production, they were tied as complex characters who fought with knives but had to depend on each other. As they exchanged opinions on each other's acting, they naturally felt interest in each other and started dating after the finale."

On Joo Wan's agency A-List Entertainment rep told Newsen on the 14th, "It's true that they got together with their other 'Knife and Flower' co-stars a few times, but Kim Ok Bin and On Joo Wan are definitely not dating. The rumors are not true. This is the first time we've ever even heard that the two have supposedly been dating for 6 months."

Kim Ok Bin's agency rep later denied the rumors to Xports News as well. "We are the type to be honest if Kim Ok Bin was dating if she was in a public relationship, but it is not the case for this dating rumor."