I decided to come here again after watching this cut. Although, some pointing the ex of Wookie is Suzy, I think otherwise. I strongly believe it's DH. Maybe they don't follow Wookie from beginning. I believed Suzy and Wookie rarely met each other because at that time Suzy was busy training for Vagabond.
While watching The World of Married, I feel that Wookie is quite similar with SunWoo and DH is like TaeOh. Sunwoo is still angry to her ex but she's also has sympathy to him. I feel Wookie is like that. Like Sunwoo and Taeoh, I also think both still can't move on.
P/s: DH, if you want good project, move to Soop or Namoo Actors. These are more stable agency.