Song Joong Ki and Park Bo Gum
Still of actors Song Joong Ki and Park Bo Gum from Domino's' pizza campaign Facebook

Descendants of the Sun actor Song Joong Ki and Hallyu star Park Bo Gum are hit by rumours that they are in a gay relationship. In a behind-the-scenes video of their latest Domino's Pizza commercial, the duo seemed very close to each other.

In the clip, the two, who are represented by the same agency, Blossom Entertainment, are seen relishing Domino's' new braised pork pizza.

However, Joong Ki and Bo Gum have chosen to ignore the rumours.

Previously, during an interview with Ilgan Sports, the 23-year-old actor revealed he looks up to the 31-year-old actor. He said: "Comparisons aside, I'm just very thankful that I'm able to receive such a great amount of love and support. And whenever I hear that [comparison between me and Song Joong Ki], I tend to motivate myself more. It also makes me think that I need to engage in acting and also in life more honestly and smartly."

Bo Gum continued: "I personally think that I was very lacking. If I can do it again, then I want to fix the parts that I lack and do better."

Adding on, Joong Ki also praised Bo Gum while he attended the 2016 Seoul Drama Awards. He said: "I knew 'Moonlight Drawn By Clouds' would do well, but I didn't know that it would do this well. I'm sincerely thankful, and want to thank everyone for loving Bo Gum."

He added: "It would be great to play brothers some time, or even two guys that fight over the same girl. Regardless, I would like to work with [Park Bo Gum] in a project."

Check out the behind-the-scenes video of Domino's Pizza commercial below.