beta
He don't consider her like her own person he think she is for him. How dare he say "don't spread your legs to much" while two sentences before he was saying how he sleeped around.
Like he is an incel. He was trying to play the pathetic lover boy but he blew his chances way back by being a creep. So now he is resorting to violence. Like why does he think that she would go back to him even if Beomjin and her don't start dating ? Like she could just move on and meet someone else completely. Like he is so delusional to think he is her only options and that he own her.
Hope he get his ass beat.