The green-haired dude claimed he didn't know anything about the film industry in Korea or the actor guy's celebrity life, but he suddenly threatened the reporter with "lies" involving insider info from the actor guy's company, which is suspicious, especially for someone as paranoid as the actor guy who typically doesn't trust anyone. Since he really trusted the green-haired dude and believed he'd only ever been telling him the truth, this whole "bluffing" situation has him second-guessing both his objectives and feelings for him.
Even in the past, the actor guy has hyper-analysed and overreacted to the smallest things, like the green-haired dude's expressions or off-hand gestures, so it kind of makes sense he'd get in his own head and make questionable decisions like this, I guess.
The green-haired dude claimed he didn't know anything about the film industry in Korea or the actor guy's celebrity life, but he suddenly threatened the reporter with "lies" involving insider info from the actor guy's company, which is suspicious, especially for someone as paranoid as the actor guy who typically doesn't trust anyone. Since he really trusted the green-haired dude and believed he'd only ever been telling him the truth, this whole "bluffing" situation has him second-guessing both his objectives and feelings for him.
Even in the past, the actor guy has hyper-analysed and overreacted to the smallest things, like the green-haired dude's expressions or off-hand gestures, so it kind of makes sense he'd get in his own head and make questionable decisions like this, I guess.