This drama is quite interesting, the villain is trying to break them both. ML will win her back because his love for her is overwhelming. The ML is a versatile actor. His voice movement gestures and facial expressions described his excellent expressive skills. both of them ML and FL are good pair the level of their acting skills are the same.
Both of them try their best to deliver their acting naturally. We have to consider that they never had any intimate connection with each other they have their BF and GF so delivering false intimate emotion is hard too. But they did a good job.