"Descendants of the Sun" lead stars Song Joong Ki and Song Hye Kyo have been rumored to be dating for quite some time now.

In a new report, it was suggested that the 30-year-old actor might have been keeping special feelings towards the 34-year-old actress because of how comfortable he is being with her.

Are they just trying to hide the real score between them?

According to Movie News Guide, Song Joong Ki shared with fans during a meet-and-greet activity in Thailand that having Song Hye Kyo as his leading lady has made doing love scenes easier.

It was further revealed that based on the actor's statement, he finds their bed scenes much comfortable to execute than his action scenes.

However, when he was asked if he is as romantic and sweet as his character in "Descendants of the Sun," Yoo Shi Jin, he admitted that they are two different people.

Meanwhile, the entertainment site noted three major possible reasons behind the success of his love team with the former "Full House" star.

Accordingly, despite not declaring that they are official dating, Song Joong Ki and Song Hye Kyo have a perfect on-screen chemistry, the first reason of their popularity.

The second reason could be their "real-life" friendship, while the third is their undeniable closeness to the point of being vocal about their admiration towards each other.

In the meantime, Soompi reported early this month that the rumored couple was reunited to record a commentary.

The said commentary will be used for the director's cut of the "Descendants of the Sun" DVD, wherein unreleased scenes, interviews and music videos will form part.

Aside from the rumored dating couple Song Joong Ki and Song Hye Kyo, co-stars Jin Goo and Kim Ji Won, writers Kim Eun Sook and Kim Won Suk, and director Lee Eung Bok are also part of the commentary due for release in November.