He's going to lose his shit. That's how men like that operate, they act however they want and then lose it when the woman finally walks away
He'll probably first lose his shit and yell and do the "how could you do this to me?!", then when he realizes Haesoo is slipping away from him physically and emotionally he's going to panic and grovel, dump his gf and do the "I left her and apologized what more do you want?!"
Yandere guy probably knows what to expect, he'll know exactly how to act: calm, protective, "I won't tell you what to do, if you want him back I'll support you because I love you but please let me be there for you", and then he can just sit back and watch Mincheol remind her what an asshole he is and in doing so sink his own ship
He's going to lose his shit. That's how men like that operate, they act however they want and then lose it when the woman finally walks away
He'll probably first lose his shit and yell and do the "how could you do this to me?!", then when he realizes Haesoo is slipping away from him physically and emotionally he's going to panic and grovel, dump his gf and do the "I left her and apologized what more do you want?!"
Yandere guy probably knows what to expect, he'll know exactly how to act: calm, protective, "I won't tell you what to do, if you want him back I'll support you because I love you but please let me be there for you", and then he can just sit back and watch Mincheol remind her what an asshole he is and in doing so sink his own ship