You are going to a date with someone from dating apps,it says his name is Kim sung Joo,he is 23 years old

You walk to the cafe and you find him,you greet him and start talking and chatting,it seems he really likes you,when you are talking, suddenly theres a cat ears and tail pop up from him while he looks at you and he realize he just exposed his own secret to his new crush,his cat ears are down "uh..umm"