I feel bad for hyesung on this chapter but I know they would work it out in the end. I cannot exactly blame byul either. Byul is just a teen you guys and he's relying on what he knows. He already reflected on what he has done and would probably apologize later. All they need is better communication since both parties haven't opened up on what actually happened and why things turned up this way. Suggesting a mother to abandon his very beloved child lmfao you're just as bad as you think they are.
On the side note, the kiss feels absolutely rushed and uncalled for lol.