Romantic tragedies where the beginning shows you how it’s going to end. You’re rooting for fate to be changed, for these characters to be happy, but you know the pain is coming. Both are well balanced, so it is not all sad all the time.

-In Born Again, the leads become reborn and don't remember their previous lives until later in the show. In Goodbye My Princess, the leads meet but then lose their memories of each other, meet again, and then regain those memories towards the end of the show.
-Due to memory loss/being reborn, the female lead forgets that she hates the male lead (for very justifiable reasons)
-a semi-evil male lead who makes decisions against the wishes of the female lead that end up getting her hurt (physically and/or emotionally). Kinda obsessed with revenge on their family. In Born Again the male lead is also a major creep and (unfortunately) sometimes his actions are portrayed as romantic. But both do majorly bad things that are (or at least, should be) pretty unforgivable.

For the record, I think Goodbye My Princess is way better, but it is also quite different in terms of genre and tone. The other recommendations listed are more similar to Born Again.