Dude is going ape sh** killer mode because he is not the reason why inseo came to Korea..he did it for Jennie..all the attention woo yeon got from ineo was not coz inseo is obsessed with him but coz he loves his friend Jennie and doing it for her. He is losing it coz inseo said he hates him. Truly a narcissistic personality. He loved it when he thought inseo's world revolved around him.