I watch in raw episodes, yes I agree with what you said, currently, every time his ex calls him, ML goes to meet her even if he is with FL, no wonder FL is felt inferior.
I'm disappointed with ML, even when he was dating with FL, he let himself be kissed by the red haired bitch, ok he pushed her away but it was obvious that he was still weak, I think he said to the FL, that the biatch had helped him at a time in his life when he was really very bad
Currently there is a time jump after their break up, and FL is now working in the company and even if the biatch and ML are not in a relationship, they are still close, frankly I don't believe that's gonna change now, oh so the end ain't gonna come now, I think FL better take her distance , but no she always blushes next to him, and the last ep i saw, she takes ML in hospital because of fever but when he wakes up, the haired girl was here lol, this girl