He met her first. He likes her but hesitating. Now he meets her again & still like her but his conscience won't allow him. All he could do now is try to hold his feeling & mend his heart, but how could he survive when the feeling is so strong & it's hurt enough to hold on?

He adores her… She admires him… He thinks she’s charming… she thinks he’s attractive… They watched each other from a far, until one day an event together change them... He’s struck by her, her presence, her voice, her laugh… Her laugh so contagious that he can’t get it out of his head & it’s bothering him... He should do something...

    In which Taehyung realises the extent of his love through one facetime call.    

Maybe, given another time and another place, the might have had a chance.