Cunning Single Lady | This sort of fits. FL used to be married to ML but left him for several reasons. Then she learns he's now a successful man (a famous CEO of a tech company) and she tries to get him to fall back in love with her. Though at the start FL seems very superficial, the story will soon dispell the misconception.
The Princess' Man | Period drama, also somewhat fits. FL and ML fall in love with each other, except that the FL kept her identity a secret. The leads fathers' become enemies, forcing them apart. The ML, feeling betrayed by the secrets kept by the FL, ends up hating her and acting cold towards her. Of course, since this is a romance series, her persistence ends up making him fall back in love with her.
It's Okay, That's Love | ML seems interested in FL from the start. However, FL is a cynic so she keeps being somewhat of a jerk to ML. ML retaliates by acting the same way back. Then FL pursues him. This one is more about changing roles constantly, between being chased and chasing.
Suspicious Partner | This one fits but with the roles reversed. FL falls in love with ML first and gets rejected. Then, ML regrets doing that and starts to pursue the FL. She's never cold to him, but she is hesitant to accept his feelings because of other things happening around them.
Because this is my First Life | The roles are reversed in this one as well. FL falls in love (it's complicated) with ML first, he rejects her unintentionally and she becomes withdrawn and a bit cold.
Another Miss Oh | Roles reversed in this one as well. FL falls in love with ML first and pursues him. ML has a valid reason why he can't return the feelings. FL ends up getting hurt and withdraws (and acts cold). ML then pursues her.