Ex-Wife Stop (2022)

Similars

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Both dramas involve a forced marriage between a sweet, downtrodden FL and a rich ML who resents the marriage. The FL is pregnant (in YAMD she loses the baby, in EWS she secretly gives birth and raises it), and leaves the ML for several years during which time he realizes how mistaken he was and does everything possible to win her back.
In both dramas : - Rich male Poor female - Married Couples - Misunderstanding between the main leads - Short length series
My Fake Wife

6.6 2020

Both are short dramas in which the ML and FL are forced to marry due to their families. ML is cold and distant to the FL but then genuinely falls for her.
Crush

8.4 2021

Both dramas feature a colder, closed off ML who's life is interrupted by the FL who is warm and cheerful. Due to the ML's carelessness, he ends up pushing her away and the two separate for years. When they reunite, the ML must work to win the FL back again.