Mainland China artiste Crystal Liu and Korean star Song Seung Heon developed real feelings for each other after acting in The Third Way of Love movie.
According to Asian E-News Portal, they attended the promotion campaign for variety show, Day Day Up together for the first time and played games together.
The netizen with sharp eyes noticed that Crystal immediately turned a black face after the organisation team arranged a female fan to hug Seung Heon from behind.
The netizen laughed and said: "The female goddess is jealous and how cute she is. Song Seung Heon, be careful!"