I read the novel a while back but I think this is progressing differently from the novel..
Iseop's mom actually walks in on them cuddling(?) and iseop is asleep and only mingyeong locks eyes with his mom. That was the turning point when mingyeong decided to leave.
Take this with a grain of salt because I did read the novel a long time ago hehe
I didn't think that at all while reading it though? That is to say I was never a hater of Iseop because he is essentially that way because of his situation. He suffers a lot in the novel similar to the manhwa when mingyeong left and yearned for her. He didn't deserve mingyeong leaving that way but I also agree that mingyeong had no other choice. He does go after her after some time and gets her back. All in all I dont remember him being a bad guy who does whatever he wants










I'm somehow the first comment here.. hopefully this gets more chapters uploaded!