nah taeha is rich so no money problems+ instead of blaming his partner hes the type to not even let her know theyre having problems and solve it all himself+rather than going for another girl if they fight, hes the type to play hurt and then lock her up WITH him cuz hes a obsessed psycho that would rather die than look at other women
But mincheol did what you just said at the beginning of their relationship! He changed later! And you say “ taeha is rich” So if for example his dad takes all the money from him , Taeha may end up being like Mincheol (づ￣ ³￣)づ
We can clearly see from the flashback that mincheol was really a good guy and suffered and sacrificed to live happily with his love! It's the harsh circumstances that made him change and become despicable. What guarantees that Tae ha won't become the same later on? His behavior is already strange.