Responses
Well, it's often used when a character is oblivious to his own feeling. And MC is really oblivious so he will need a little push. But I'm not sure if they will be an actual love triangle but it will habe a misunderstanding with their relationship for sure. Either on purpose by this fellow actor to "help" his new friend or by accident.
I am not liking this roommate at all. I am pretty sure he will fall for hangyul and then this would be used a plot to make Robin jealous. I can already see they'll be friends and then at some point this guy will kiss hangyul and Robin will see it.