Goodbye to Goodbye (2018)

Both stories have a girl run to her bf's mom when they discover they're pregnant and tho the mother is confused she builds a sweet relationship with the girl

Similar in that there's an accidental pregnancy between a young still in school couple and the families are somewhat dysfunctional.

Heard it Through the Grapevine is MUCH better than Goodbye to Goodbye though.
Less makjang and hilarious almost borders on dark comedy.

both have: (from most to least overlapping)

- teenage/young pregnancy
- depression with mothers
- father breadwinners
- estranged family relations on both sides (mother and father to-be)
- discrimination at school due to pregnancy news
- cheating/love triangles among the older characters

They have the same, melo feel and both deal with spousal cheating. I feel like they also have very similar cinematography