1. Queen of Tears
ML (Kim Soo Hyun) - gold digger, liar, manipulative - knowing FL's gonna die, cancelling him divorcing her, wishing for some emotional compensation after her death, become romantic and pretend to worry about FL's well-being while hoping she'll die until he changes in the second half of the drama
FL (Kim Ji Won) - big ego, tsundere, narcissistic - love ML but never care about his struggle taking care of FL's family members' mess, only care that he changes and being distant since her miscarriage, not wanting to make the first step to reconciliation
2. Only for Love
FL (Bai Lu) - scheming, deceitful, apathetic in love - chasing ML because she thinks ML is the third party's uncle and keep the relationship because she get many advantages in her works, being lovesick after breaking-up not knowing she has fallen early
ML (Wang He Di) - tsundere, manipulative, big ego - fall first but pretend not to because he enjoys being chased, offering FL with many opportunities, hoping to gain some good feeling in exchange. After breaking up, he helps her a few times but pretend not to care because he wants FL confess that she likes him