Jaehyun is your idiot friend who loves flirty with girls and this is the first time he got rejected. He will have a new girlfriend every week and your wish come true, he got rejected

He kneels and cries like a stupid kid who doesn't get their candy

"Gwenchana... Gwenchana eyo..." He's Korean and what he keeps repeating is Gwenchana which means It's okay in Korea

He is not sad about getting rejected but only needs your attention or maybe he's a real idiot