this is too much korean manhwa for her NOT to be the ex
Right !? I felt it since the beginning, there's something wrong with her. She act too much of the perfect, innocent, kawai girlfriend to not be suspicious.
She is very selfish and that's why she's not a good person to me... I know everyone's selfish at times but I think she's just too much thinking only about herself because she didn't even clear taesoo's reputation and put blame on him for everything it's really making me mad

Ms doh is definitely the ex! I just know it!!!